Last Updated: 19/02/13 9:39pm
Arsenal face an immense challenge if they are to qualify from the last 16 of the Champions League after a 3-1 first leg defeat by Bayern at Emirates Stadium. Away goals from Kroos, Muller and Mandzukic added to the pressure on the already under-fire Wenger as his side were largely outplayed. A second-half header from former Bayern player Podolski had given Arsenal some hope as they threatened a comeback. But runaway Bundesliga leaders Bayern are now very strong favourites to reach the quarter-finals ahead of the second leg in Germany on 13th March. Stay with us for all the post-match reaction.
Robben wants a free-kick close to the corner flag but instead has to settle for a throw-in. Bayern then win a corner.
Bayern have been very good this evening. They are incredibly organised and have been clinical on the counter-attack. They will be a match for anyone in the Champions League.
Cazorla wastes the free-kick when failing to beat the first man. Sagna then hits a follow-up wide of the target.
Lahm is correctly booked for a sliding challenge on Vermaelen on the right-hand side of Bayern's box. A chance for Arsenal to cross from the free-kick.
It is simply a case of running down the clock for Bayern. They are letting Arsenal have the ball but are keeping a very good shape to prevent any late pressure from their hosts.
Arsenal have been unable to get behind Bayern's defenders with any frequency. It has been a great away performance by the Bundesliga leaders.
Wilshere has been Arsenal's best player tonight but he has been fighting a losing battle in central midfield. Arteta and Ramsey did not make much impact.
It is now all a bit flat around the Emirates. Arsenal fans know their team will have to cause a major upset to avoid going out of the Champions League.
Gomez can almost make an immediate impact. Szczesny does well to save a deflected Gustavo effort and Gomez's follow up is then balsted over the crossbar. He had options for a pass.
That is a devastating blow for Arsenal ahead of the second leg in Germany on 13th March. But it was a great move from Bayern.
Arsenal are back to facing a mountain to climb. Robben works an overlap to Lahm, who, in space, crosses low across the six-yard box. Mandzukic meets the ball under pressure from Sagna and more through luck than judgement deflects the ball to send it looping into the goal.
Arsenal burst forward on the left flank but Lahm reads Rosicky's attempt at a clever pass to Cazorla and can intercept.
Robben has the chance to cross from the right. Giroud heads away and the ball eventually goes out for an Arsenal goal-kick.
Giroud almost scores with his first touch. Walcott crosses from the right and the Frenchman volleys at goal but it is straight at Neuer, who is a little lucky to only deflect the ball away.
Ramsey's evening is over and Rosicky comes on in his place. Podolski is replaced by Giroud. That will likely mean Walcott goes out wide.
Podolski beats Lahm with ease but his cross-shot then hits a crowd of defenders in the Bayern box. Podolski has been a lot better since scoring.
Schweinsteiger takes on the shot but his right-footed effort is always too high to trouble Szczesny. Wilshere tries to take on the Bayern defence by himself but just over does it when trying to beat Alaba in the box.
Arsenal collect their fifth booking of the night as Ramsey trips Muller from behind. Free-kick to Bayern around 30 yards from the goal.
Robben is furious he did not get an early pass from Kroos when Bayern were breaking but the Dutchman should have done better to stay on side.
Arsenal have not really put Bayern under much pressure since their goal but they are certainly keeping the ball a lot better than they did in the first half.
From the corner, Szczesny flaps and is lucky to see Martinez head over the crossbar. With the ball out of play, Bayern make a change. Former Chelsea man Robben comes on for Ribery.
Kroos' free-kick is disappointing but he then again has the ball at his feet and a 20 yards effort has to be tipped behind by Szczesny for a corner.
Koscielny makes a bit of a mess of a clearance after shanking a half-volley into the stands for a Bayern throw-in.
Ironic cheers for Ribery, who takes on an optimistic long-range effort which does not trouble the target of Szczesny's goal.
There is now some belief about the Arsenal players and Bayern are becoming a little bit ragged. Arsenal have had 64 per cent of the second-half possession.
Muller is now definitely booked for clattering Podolski wide on the left. Walcott's cross is almost perfect for Mertesacker but Neuer just punches away.
Arsenal now need to seize the initiative. Bayern's confidence will be rattled and Wenger's team need to test Neuer.
Bayern will be furious that the corner was awarded but their defending was then atrocious. Neuer came for the corner but left it to a crowd of his own defenders. All the Bayern players left the ball and that left Podolski with the chance to head in against his former club after the ball had bounced. It is a lifeline for Arsenal and a very rare goal for Bayern to concede.
Corner to Arsenal even though a Cazorla shot clearly deflects off Podolski before going out of play.
Walcott has drifted out to the right in an attempt to take on Alaba but the Bayern left-back is up to the task and tackles for a throw-in.
Mertesacker has to quickly step out of defence to prevent Ribery from darting on to a loose ball. It is scrappy at the moment, which will suit Arsenal.
Wilshere is looking to drive further forward. The ball almost drops for the midfielder on the edge of the Bayern box on the volley but he is charged down by Dante.
The game is following the same pattern as the first half. Arsenal are struggling to get the ball to Walcott. Playing the England international in a central role has not worked today.
Podolski earns a huge cheer from the Arsenal fans as he tackles back to win his team a throw-in deep in the Bayern half. Ramsey's cross then comes to nothing.
Bayern have Arsenal pinned inside their own penalty area in the opening exchanges since the restart.
Early corner for Bayern in the first two minutes of the second half. Kroos' first delivery is headed away and then his follow-up cross is also cleared.
Neither side have made any changes in personnel. It will be a remarkable turnaround if Arsenal can get something out of this game.
A few boos from Arsenal fans greet the half-time whistle but they are soon drowned out by chants of 'come on Arsenal'. Wenger's team have a mountain to climb. Their awful defending has been ruthlessly exposed by Bayern, who have scored through Kroos (7) and Muller (21).
Bayern are aiming to keep the ball and run down the clock for the remaining couple of minutes of the half.
It is almost three. Bayern again expose Arsenal's left side and Lahm can cross. Mandzukic is in acres of space in the box and his header whistles inches wide of the near post.
Dante fouls Cazorla on the edge of the centre circle. Arsenal take the free-kick short and it allows Wilshere to charge forward. On the edge of the Bayern box, Wilshere goes. But it is fairly theatrical and the midfielder is waved back to his feet by referee Moen.
Arsenal have had a few chances as we approach half-time. But there is a feeling Bayern have taken their foot off the gas. They could, if they wanted, go up a gear or two to return to their brilliant start to the game.
Bayern look to break from Sagna's cross. But an attempted pass to switch the play to Ribery sees the move come to an end as Szczesny comes out to claim the ball.
Sagna has another chance to cross down the right. It is towards Walcott but just over the forward's head.
Correction: The earlier booking which was thought to be to Muller was in fact to Schweinsteiger. It must have been for dissent. Schweinsteiger will be suspended for the second leg.
Ramsey eventually has the chance to cross. But his cross towards Walcott is a bit tame and then Sagna climbs over the back of Mandzukic to give away a foul.
Ramsey has the chance to stretch his legs in a rare Arsenal attack on the left. He is closed down but Arsenal remain on the attack.
Alaba slips on the ball close to his own byline. That lets in Sagna on the right, who finds Walcott. But Alaba recovers to close down Walcott's shot.
Muller is the next player to go in the book for an adjudged intentional handball close to the halfway line.
As some people predicted before kick-off, Arsenal have lacked a presence up front. Walcott has had to play with his back to goal. It will be interesting to see if Wenger decides to introduce Giroud for the second half.
Dante is astonished to give away a free-kick when the ball ricocheted on to him when closing down Walcott in Bayern's half. Wilshere's free-kick is lobbed into the Bayern box and the knock down finds Mertesacker, whose goal-bound shot is charged down.
Muller is the first German player to score and assist in a game against an English club in England in the Champions League.
Cazorla sends in a cross from the right towards Podolski. But Lahm is in the way and can volley clear on the side foot.
But Bayern make a rare mistake and gift Arsenal a throw-in deep in the German club's territory. Ramsey tries a back-heel after receiving the throw-in. It does not quite come off but Arsenal retain possession and go back to their defence.
Bayern are now understandably happy to take their time whenever they have the ball. It has been a stunning half-an-hour for the visitors.
Cazorla then again has the ball on the edge of the Bayern box. But rather than attempting to take on Alaba, he tries to thread a pass to Walcott, which gives the England international no chance.
Cazorla's shoulders droop as he has the ball taken from him in the centre circle. Arsenal cannot afford to lose focus.
Bayern are now happy to drop off and let Arsenal have the ball in their own half before springing into action as soon as they cross the halfway line.
Apart from that early Walcott cross, Arsenal have hardly had an attack to speak of. It has been Arsenal's ropey defence against Bayern's excellent forwards.
A replay of Bayern's second goal shows Van Buyten had a completely free run before he won his header. It is abysmal defending from Arsenal.
Arsenal are losing their temper. Arteta clatters Mandzukic, who was being held up by Vermaelen. Wenger's players are playing into the hands of Bayern.
After a very noisy start, Arsenal's fans are now quite quiet. Bayern's fans are singing a version of 'Three Lions'.
This could be damage limitation for Arsenal. Bayern have been superb. From the corner, Van Buyten wins the header. Szczesny wins saves but his palmed effort is quickly followed up by Muller who stabs the ball into the roof of the net. It is an awful goal for Arsenal to concede.
Arsenal's midfield really are chasing shadows at times. Bayern have been excellent at their decision-making of when to make a pass. They win another corner down the Arsenal left.
Mertesacker heads away the corner and Schweinsteiger's attempt at a lobbed follow up from outside the area loops harmlessly over the crossbar.
Bayern win another corner after another attack down Arsenal's left. Koscielny has to poke the ball out of play at the near post.
Vermaelen, playing out of position at left-back, is having a difficult start to the game and Bayern are targeting the Arsenal captain.
Schweinsteiger takes the free-kick but his low effort deflects off one of his team-mates in the Arsenal wall and goes out for a goal-kick.
Vermaelen goes in the book for a late challenge on Martinez. The free-kick is within shooting distances of the Arsenal goal.
The movement of the ball by Bayern in midfield is superb. They are switching the ball in triangles with one-touch passing.
Arsenal need to show a bit more composure on the ball. They are in a bit of a rush with their passing and Bayern are looking happy to pick them off.
Bayern remain on the attack and win a corner from some poor defending from Vermaelen. But Arsenal break from the set-piece through Walcott. He plays the ball out to the right and it breaks down when Sagna is stopped.
Schweinsteiger tees up Van Buyten for an attempted thunderbolt from the free-kick but the centre-back blasts the ball into the Arsenal wall.
Bayern are dominating the central midfield area. Kroos is brought down around 30 yards from goal for a free-kick after a foul by a combination of Arteta and Mertesacker.
This will now be a major test of Arsenal. Bayern's defence is incredibly stingy and they are looking a great threat on the counter-attack.
Arsenal pay the price for an open start to the game. Muller's cross from the right was poor but Arsenal defenders only wave a leg at the ball. It finds Kroos on the edge of the box and he smacks a perfect half-volley past Szczesny.
Arsenal break forward. They are having some joy down the left of Bayern's defence. Walcott's low cross has to be knocked behind for a corner by Lahm. Bayern survive the resulting set-piece.
Vermaelen blocks a Mandzukic cross-shot and Bayern have a corner on the right. Kroos delivery is headed away at the near post but Bayern remain on the attack.
Cazorla bursts down the right and has the chance to cross from just inside the penalty area. The retreating Schweinsteiger manages to get a foot in the way and deflects the ball back to Neuer.
As expected, Walcott is playing in his preferred role as a centre forward. Ramsey seems to be operating as the deep-sitting midfielder.
Mertesacker slides in on the edge of his own box with an important challenge on Kroos as Bayern broke forward.
Paul Haigh says: "I agree with the few saying that Bayern are not the team that they are being made out to be. Can't help but feel Guardiola is taking the easy way out by avoiding the Premiership. Perhaps he knows he cannot cope there or wants to wait until better managers (perhaps Sir Alex Ferguson) are out of the way so he appears to be the best? Arsenal to surprise everyone 2-0 tonight."
As the teams prepare to emerge from the tunnel at the Emirates, according to my maths, Arsenal's starting XI has just 232 games of Champions League experience while Bayern's has 353.
Remember to stay with us after the final whistle tonight. We will have a full match report, post-game reaction from managers and players along with all the analysis and statistics. Kick-off is 10 minutes away.
Jesse doubts whether Bayern are the team they have been built up to be. Do not forget Pep Guardiola will be taking over in the summer so he can obviously see some potential. It will be interesting to see how the game unfolds.
Anthony Wagstaff says: "Gonna be a tough game tonight. We are lucky to have Koscielny and not Jenkinson in defence but Ramsey in midfield I'm not too sure about. Gotta go for a win for Arsenal of 2-1 - Cazorla and Podolski to score with Robben for Munich. Come on Arsenal prove the pundits wrong."
Jesse Rall says: "Not sure that Arsenal will win tonight, but I highly doubt that Bayern Munich are as good as they have been made out to be. Yes, the Bundesliga is getting better, but it still has nothing on the Premier League. So, this talk of how well Bayern are doing in the league only reflects how good the other teams are, the fact is that Bayern are playing poor teams week in, week out. Whereas Arsenal are playing teams that are much better. Although they did lose to Blackburn, but don't forget that they are a championship side with Premier League players. Mandzukic to score first but a 2-2 draw."
Sebastian Quarterman says: "Why on earth does Wenger always prefer Ramsey to Rosicky and Diaby? Poor choice, I feel, and many Gooners will agree."
Arsenal will have happy memories of referee Moen. The Norwegian is the same man who took charge of their win over Olympiakos in the group stages. Moen was also involved in Arsenal's 5-1 thrashing of Shakhtar Donetsk in 2010 and Bayern's 2-0 victory over Marseille in Munich in last season's quarter-finals.
If you fancy a flutter with Sky Bet, Arsenal go into the game as underdogs and are 5/2 to win on the night and the same price to qualify for the quarter-finals. Runaway Bundesliga leaders Bayern are 19/20 to triumph tonight and 2/7 to reach the last eight. We offer 8/1 for Walcott and Mandzukic to both find the net.
With just less than half-an-hour to kick-off at Emirates Stadium, here is a round-up of all the team news. Walcott looks set for a central striker role. Wales midfielder Ramsey starts as Arsenal look for a response from the shock FA Cup exit against Blackburn, so France striker Giroud has to be content with a place on the bench. Defender Koscielny recovers from illness, with captain Vermaelen expected to fill in at left-back as January signing Monreal is cup-tied. For Bayern, Spanish midfielder Javi Martinez is the only change from the team which beat Wolfsburg as in-form Mandzukic again leads the attack for last season's Champions League runners-up.
Matt Hobbs says: "If we had won our group Didier Drogba and Galatasaray would have been waiting in Turkey! Probably licking his lips at the prospect of facing the arsenal back four!"
Mitch Galvin says: "Wenger's decision not to play Giroud will make their attack utterly toothless. No physical presence to hold the ball up will prevent Arsenal from scoring any goals."
Some disciplinary news ahead of kick-off. If Koscielny, Cazorla, Dante, Martinez, or Schweinsteiger are booked tonight, they will miss the second leg.
Thanks for all your emails and tweets so far this evening. Having drawn Bayern, are Arsenal paying the price for failing to win a fairly straightforward Group B? Walcott is expected to play through the middle tonight. Is that a wise move from Wenger? Keep your comments coming at firstname.lastname@example.org or via Twitter @SkySportsPeteF.
Scott Sutherland says via Twitter: "2-1 Arsenal win tonight. Too many people have wrote us off before a ball has even been kicked. It's time to prove them wrong."
John Newbery says: "I have real doubts that the tie will be over and beyond Arsenal's control by the end of this first leg. Since the days of Thierry Henry and Dennis Bergkamp, Arsene Wenger hasn't replaced our best players and now we are just an average Premiership team, going nowhere. This is our only way into Europe next season, and I think we are doomed, yet another season without any silverware."
This game also has the added angle of the inclusion of Lukas Podolski in the Arsenal team. The German international made 71 league appearances, scoring 15 goals, for Bayern between 2006 and 2009.
Jon Jaffrey says: "Everyone is talking about how well Bayern Munich are playing in the German League but keep forgetting this is the Champions League which this season they have conceded more than any other team that have got through to the last 16. As for people saying Wilshere is overrated, they need to learn about football. He is class and Arsenal can win tonight."
These two teams met at this stage of the Champions League in 2004/05, with Bayern going through 3-2 on aggregate. Arsenal have also gone out of Europe at the last-16 stage in the past two seasons. Is a good run in the Champions League the only way Wenger can save the season?
Neuer, Dante, Van Buyten, Lahm, Ribery, Javi Martinez, T. Muller, Alaba, Schweinsteiger, Kroos, Mandzukic. Subs: Starke, Rafinha, Robben, Shaqiri, Luiz Gustavo, Tymoshchuk, Gomez.
Jack Taylor says via Twitter: "We need a win today to show those saying Wenger out that they should be saying in Wenger we trust."
Szczesny, Sagna, Mertesacker, Vermaelen, Koscielny, Arteta, Wilshere, Walcott, Ramsey, Santi Cazorla, Podolski. Subs: Mannone, Jenkinson, Diaby, Rosicky, Oxlade-Chamberlain, Coquelin, Giroud.
Referee: Svein Oddvar Moen (NOR) Assistant referees: Kim Thomas Haglund (NOR), Frank Andas (NOR) Additional assistant referees: Ken Henry Johnsen (NOR), Dag Vidar Hafsas (NOR) Fourth official: Sven Erik Midthjell (NOR)
Bayern have never won in five visits to London and have lost in their last four visits to England. But they have won 10 out of 11 on their travels in the Bundesliga this season and ever-present goalkeeper Manuel Neuer has conceded just once.
Manikandan says: "I seriously fear for Arsenal and Wenger. With a Bayern defence that has conceded very few and scored high, it's almost all over for both Wenger and Arsenal."
Rafee Ahmed says: "Bayern Munich will be just too strong for Arsenal, who are now are a very average team. Can't wait to see Schweinsteiger destroy Arsenal's midfield, who have some very overrated players like Wilshere and Arteta."
Jupp Heynckes' Bayern, who won 2-0 at Wolfsburg last Friday, could increase the pressure on Arsenal boss Arsene Wenger after the Frenchman spent most of his pre-match press conference angrily responding to questions about his future. What do you think? How will this game unfold? Get in touch via the below addresses.
This will be an incredibly difficult challenge for Group B runners-up Arsenal in the wake of their FA Cup humiliation by Blackburn Rovers. Group F winners Bayern are 15 points clear at the top of the Bundesliga and have not lost in 18 games in all competitions.
Stay with us for all the team news. But, in the meantime, feel free to get in contact throughout the evening with your predictions and thoughts on the game at email@example.com or via Twitter @SkySportsPeteF. A selection of the best comments will be published.