Last Updated: 24/07/13 7:37pm
Thanks for all your comments today folks! Don't forget, you can always follow me on Twitter: @RazMirza to send me your views so speak to you all soon!
It's been a brave second half effort from this young Barcelona side, but they're no match for the treble winners.
The tall Croatian striker scores his third goal of pre-season. Emre Can opened up the Barcelona defence with a slick pass to Diego Contento and he put the ball on a plate for Mandzukic in the middle for an easy tap-in. Game over!
Claudio Pizarro climbs high at the near post but he is unable to direct the ball into the far corner after being pressed by a Barcelona defender.
The Allianz Arena crowd were whistling in pure frustration after Barcelona kept possession for a long period before those changes.
Two more changes for Bayern Munich now as Emre Can and Claudio Pizarro come on for Rafinha and Thiago Alcantara.
No he's not! Oier, Samper, Ilie, Espinosa, Nieto, Dongou and Roman have all come on for this second half.
The Barca 'B' team have been controlling possession for long periods of this second half. They've acquitted themselves very well.
A treble change for Bayern Munich. Diego Contento replaces Franck Ribery while Jan Kirchhoff comes on for Jerome Boateng and Bastian Schweinsteiger replaces Tony Kroos.
It's amazing to see how these young Barcelona players play exactly the same way as the first team. The Catalan philosophy!
GOOD SAVE! Mario Mandzukic very nearly adds a second, but his sliderule effort is palmed to safety by Oier.
@MADEIN86 Tweets in to say: "To the comment by Taofik; if you were Guardiola and had the pick of any team in the world to manage, why would you pick a bad one?"
The Bundesliga giants are now dominant in possession, despite the changes. They seem to have so much strength in depth.
Guardiola shares a joke with Dante as he made his way off the field. That shows how well he's getting on with his players and how well he has settled into his new job in Bavaria.
Pep Guardiola makes two more changes here. Dante is replaced by Daniel Van Buyten while Luiz Gustavo comes on for skipper Philipp Lahm.
Philipp Lahm's cross falls to Thiago Alcantara, but his low drive is well blocked and he is denied a goal against his former club.
Barcelona's seond half goalkeeper Oier makes a fine stop at his near post to deny Franck Ribery a second.
I believe that'll be Carlo Ancelotti Taofik. Guardiola won 14 titles between 2008 and 2012 at Barcelona. Not a bad record is it!?
Taofik says: "Truly it shows pep is afraid of coaching a team that do not have established player's he should not be rated in the likes of mourinho, hindinks, scolari and the new coach of real madrid."
Philipp Lahm drifts a ball to the back post, but Thiago Alcantara is unable to climb any higher to reach it.
Well, with so many young players now on show Qasim, I can't see anything other than a big scoreline in Bayern's favour.
Qasim Suhail emails in to say: "I think in the back end of the 1st half Barcelona produced more attacks but i cant see barcelona giving any major trouble to bayern. There just too solid. The best barcelona really can do is try not to make it an embarassing score line like 4-0 again. Bayern are an unstoppable force in europe right now."
It looks as though the coach for today Jordi Roura has decided to send on the Barcelona 'B' Team for this seconf half. Espinosa's corner is headed clear.
Barcelona have also made a few changes with Dongou one of them along with Kiko Femenia, Nieto and Samper.
Bayern Munich to win this game 3-0 is now 9/2 while Lionel Messi is 8/1 to score the next goal although I'll be surprised to see him in second half action. Head now to SKYBET to place your bets on this match.
If you'd like to air your views before or during second half, email Raz...that's me! at email@example.com or Tweet me: @RazMirza and I'll publish as many as I can.
The whistle is blown for half-time. We actually ended up playing the full 45 minutes and not 40 minutes as I said earlier due to . Skipper Philipp Lahm scored the only goal of the half for Bayern Munich. Expect to see a whole host of changes for the second half.
OFF THE POST!Rafinha almost concedes an own goal as he attempts the chest the ball back to Manuel Neuer.
The whistle is blown just as Thomas Muller lashes his shot goalwards. He was coming back from an offside position, which is why he was immediately flagged.
JUSE WIDE! Cristian Tello cuts inside before sliding his right-foot effort wide of the far post with Manuel Neuer beaten.
Now, another Tony Kroos cross looks for Alaba at the back post, but Barcelona had enough players back this time.
Like Barca superstar Lionel Messi, Martino is a native of Rosario, and he spent 14 years of his playing career with local club Newell's Old Boys, the club Messi played for as a junior before moving to Barcelona aged 13.
It will be interesting to see how new Barcelona manager Gerardo Martino will get on at the Camp Nou. Lionel Messi is certainly happy to see his compatriot take over. Martino is due to fly into Barcelona on Thursday afternoon and will pose for the traditional photo outside the club's offices.
Alaba gets Thomas Muller moving in behind the Barcelona backline, but although the tall German slides to try and force the ball past Pinto, the keeper makes an important stop.
Lahm is loving his new role and he doesn't look out of place at all in midfield. Nobody is going to argue with the experienced German international.
Bayern Munich are 1/8 to claim victory with our friends @Skybet, who make Barcelona 20/1 and the draw 6/1. Surprise, surprise, I'm going for a home win tonight - 3-0, which is priced at 5/1. Well worth a flutter in my book! Head now to SKYBET to place your bets on this match.
OFF THE CROSSBAR! Thomas Muller clips the woodwork after picking up the ball in the middle of the park.
Franck Ribery goes over Bartra's challenge in the box but he does not get the penalty award this time. Replays show he had a good case!
How can I disagree with you Ryan. Why do Bayern Munich need Pep Guardiola when they're completely dominating the La Liga champions. It must be the easiest job in European football. Even I would be able to manage the Bavarian giants Ryan and I'm not joking either.
Ryan from South Africa writes in to say: "Bayern Munich's team looks incredibly strong! And they're missing quite a few important players too. I can only see a Munich win. How will the rest of europe be able to stand up to them?"
SO CLOSE! Youngster Sergi Roberto flicks the ball past the onrushing Manuel Neuer after a neat one-two with full-back Montoya. Lovely move that and very unlucky with the finish!
With the German Super Cup looming, Guardiola has completely about experimentations as he runs a sort of dress-rehearsal for Saturday's match against Borussia Dortmund.
A disappointing goal from Barcelona's point of view as Philipp Lahm - playing in a new midfield role for the treble winners - flicks the ball past Pinto after a delicious inswinging cross from Franck Ribery.
Javier Mascherano has thrown himself into a few early full-blooded challenges already in this clash.
Thiago Alcantara is probably the highest profile signing on show this evening. He signed from the Catalan club and was seen getting on very well with a few of his former team-mates before the contest.
Tony Kroos' inswinger is headed over from the towering Thomas Muller, who was Bayern's top scorer last season.
I wonder if we will be seeing some 'Tika-Taka' football in Bavaria this season? Montoya concedes the foul just outside the area to the left.
A wonderful start to the 2013 Uli Hoeness Cup at the Allianz Arena. Pep Guardiola watches on from the touchline as the new head coach of Bayern Munich.
OFF THE LINE! Adriano does really well to deflect Arjen Robben's goalbound effort over the crossbar from Franck Ribery's inviting cross.
Both sides are weraing their new away kits! The Bayern Munich number is dark blue of sorts with a dash of red. Meanwhile, Barca's coulours are yellow and red striped. Certainly an improvement on last season's strip.
CLOSE! Lionel Messi very nearly makes an early breakthrough as he opens up space ahead of him before driving his left-foot effort wide.
The match has been reduced to 40 minutes a half. Lionel Messi starts for Barcelona but Neymar does not feature. Mario Goetze is not in the Bayern Munich line-up either.
BAYERN MUNICH (4-3-3): Manuel Neuer, Philipp Lahm, Rafinha, Daniel Van Buyten, Dante, Alaba; Thiago Alcantara, Tony Kroos; Arjen Robben, Thomas Muller, Franck Ribery.
BARCELONA (4-3-3): Pinto; Montoya, Bartra, Javier Mascherano, Adriano; Alex Song, Jonathan dos Santos, Sergi Roberto; Alexis, Lionel Messi, Cristian Tello.
Just to update you, there has been a slight delay to the kick-off time due to a problem with transport around the stadium, so we're expecting kick-off at 17:45 BST.
The game's kick-off time has been brought forward to 1830 local time (1730 BST) to allow home-team fans to watch Germany's women in the semi-final of the 2013 European Championships. It's as glamorous as friendly games come, so expect to see a sell-out at the magnificent Allianz Arena in red-hot Bavaria.
Barcelona have something to prove against Bayern having been humbled 7-0 on aggregate in last season's Champions League finals when the Germans backed up a 4-0 win in Munich with a 3-0 rout at the Camp Nou. Are we in for a similar scoreline tonight?
Bayern's Germany stars Bastian Schweinsteiger and Mario Goetze are both recovering from injury, while neither team is expected to have their Confederations Cup stars in action. Both Barcelona's new Brazil star Neymar and Spain's Carles Puyol, who is working his way back to fitness after knee surgery in March, are expected to sit it out. Senior stars Javier Mascherano, Adriano Correia, Alex Song and Alexis Sanchez are likely to feature among a host of reserves, while Argentinian superstar Lionel Messi is set to play some part.
With six pre-season fixtures under their belt, Bayern Munich have scored an outstanding 35 goals, and conceded just once - in the weekend's 5-1 Telekom Cup victory over Borussia Monchengladbach. New-signing Thiago Alcantara netted his debut goal. Bayern became the first German team to win the treble of European, league and cup titles last season and they added another trophy to their growing collection.
Well Dave, I'm just waiting on the teams, but I would be surprised to see him in the strating XI today. In fact I don't think we'll be seeing any of the players who played in the recent Confederations Cup in tonight's line-up. As for where I think he'll end up this season, I do feel if Manchester United pursue him for the next couple of weeks, I can see him moving to Old Trafford to link up with Robin van Persie. He's hardly a regular at the Camp Nou and it's hard to see why, because every time I see him, he scores a glut of goals.
Dave Parsons emails in to say: "Is Cecs Fabregas in the starting 11? Whats your prediction for where he will be playing this season?"
If you'd like to air your views before or during the match, email Raz...that's me! at firstname.lastname@example.org or Tweet me: @RazMirza and I'll publish the best.