Last Updated: 12/03/14 10:23pm
GOAL: Dani Alves restores Barcelona's lead as he converts from close-range after being fed by Iniesta.
Good save again from Hart to keep out Fabregas' shot after Messi teed up the midfielder on the edge of the box.
Sanchez tries to catch City on the break, but he makes a mess of it and Fernandinho clears the danger.
Zabaleta is shown his second yellow card and then a red card for dissent after arguing with the officials over the penalty call on Dzeko.
Strong claims for a penalty as Dzeko appears to be tripped up by Pique, but the referee waves away their appeals.
Iniesta works a short corner before running to edge of the box and probably hitting the worst shot of his career as it goes well wide of the target.
Good defending this time from Lescott to stop Messi getting on the end of Alba's cross from the left.
GOAL: Barcelona break the deadlock as Lescott fails to deal with Fabregas' pass and the ball falls to Messi inside the box and he flicks the ball past Hart.
Barcelona win a free-kick on the edge of the box as Kompany trips Neymar. Shooting chance maybe for the home side.
Messi finds space on the edge of the box and runs at the City defence before firing his shot just wide of the target.
Pique's clearance falls to Nasri on the edge of the box, but his left-footed flies well over the top.
City on top now and Toure is unlucky to be called back for a foul after robbing Iniesta of the ball.
Kolarov's cross from the left falls to Zabaleta inside the box, but he slices his shot just wide of the target. Another big chance for City.
Great save from Valdes to keep out Dzeko's powerful header from Kolarov's cross. Best chance for City so far.
Messi goes so close to scoring as Lescott's gives the ball away to the Argentine and he beats the defender inside the box and is unlucky to see his shot come off the post.
Dzeko is straight into the action as the ball falls to him inside the box and his shot is well saved by Valdes.
The referee brings the first half to a close and it is goalless at the break. Still 2-0 to Barcelona on aggregate.
Off the line from Fernandinho as Hart is stranded as he tries to tackle Neymar who cuts inside the goalkeeper and fires goalwards only to see his effort cleared by fellow countryman Fernandinho.
City create their best chance of the game as Silva tees up Nasri inside the box, but the Frencman fires his shot straight at Valdes. Big chance missed there for City.
From the corner Messi picks out Xavi's run and his shot is kept out by Hart. Two good chances in a minute for Barcelona there, but it remains 0-0.
Big chance for Barcelona as Kolarov slips and allows Neymar to go through on goal and his shot is well saved by Hart at his near post for a corner.
Iniesta is down and in need of some treatment after being caught by Zabaleta in the build-up to that last City attack.
City have a sight of goal as Zabaleta finds Silva and he cuts inside only to fire his shot over the top. Wasted opportunity.
Great tackle from Lescott to stop Neymar getting through on goal after Kompany was caught out of position.
Lescott gets on the end of Silva's cross, but he is adjudged to have pushed someone before the cross came in.
Messi goes another run and he skips past Kompany, but under pressure from Toure he overhits the ball and Hart is quickly out to gather the ball.
Fernandinho needs to be careful as he gives away a free-kick on Alba and he is already on a booking.
Barcelona find the net, but Alba is adjudged offside before crossing for Neymar to slot the ball home. Replays show that Alba was just onside. Another lucky escape for City.
Sight of goal for Milner as Kolarov's cross finds the midfielder inside the box, but he fires his shot just wide of the target.
Messi gets past Lescott and beats Joe Hart to the ball, but Kompany is alert to get back and clear the danger with Messi having an open goal if he did not clear the danger.
Booking for Fernandinho for a foul on Busquets meaning the midfielder will be banned if Man City get through tonight.
The home side have claims for a penalty waved away as Messi goes down in the box under a challenge from Lescott.
Vital touch from Zabaleta to cut on Neymar's cross before Xavi's fires his shot well over the crossbar.
Man City pressing very high up the pitch in the early stages as they look to force mistakes from Barcelona.
Lovely skill from Iniesta just inside the City half as he wins a free-kick off Fernandinho who is forced to pull him back.
James Milner starting down the left for Man City and the visitors have made a decent start keeping the ball in the early stages.
Lots of flag waving going on at the moment in the stands from the Barcelona fans. Great atmosphere building up inside the Camp Nou.
Manuel Pellegrini is in the stands to watch the action as a result of his touchline ban. England boss Roy Hodgson also in attendance.
We are only 15 minutes from kick-off and the excitement is building. Can Man City avoid becoming the second English team to be knocked out at the last 16 stage after Arsenal's exit at the hands of Bayern Munich last night?
City can take hope from the fact that Barcelona have lost three of their last six La Liga games, but can they pull off one of the best comebacks in Champions League history tonight?
Exiled City fan Ian Ashman in Spain is happy with the team selection from Manuel Pellegrini and is going for a 3-1 win to the Man City
Alan Guest does not think Man City have much of a chance tonight and is going for a 3-1 win to Barcelona.
Graham Ives, who is Head Groundsman at Margate FC, thinks Man City can take the game into extra-time, but that Barcelona will go through after extra-time.
Interesting stat: Barcelona have gone through on 32 of the 34 times they have won the first away leg in a European tie.
Ruben Cousillas, Pellegrini's assistant, will take charge of the team and he will be hoping to inspire a famous win.
Man City will have to do it tonight without Manuel Pellegrini as he starts a two-match touchline ban tonight following his criticism of referee Jonas Eriksson after his side's 2-0 loss in the first leg.
Tonight's referee is Stephane Lannoy from France and let's hope we are not talking about him after the game.
John Davis, via Twitter thinks Man City can force the game into extra-time before Barcelona prevailing 3-2 on aggregate.
Andrew Holliman, who is a Liverpool fan, believes City have a good chance of overturning the 2-0 deficit and is expecting goals tonight
Chris Green would love to see City produce a comeback but is predicting a 3-1 win for the home side, with Messi getting a hat-trick.
I look forward to hearing from you and I will endeavour to post as many of your thoughts, opinions and reaction as I can.
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Man City starting XI: Hart; Zabaleta, Kompany, Lescott, Kolarov; Fernandinho, Toure; Milner, Silva, Nasri; Aguero
Barcelona starting XI Valdes; Alves, Pique, Mascherano, Alba; Xavi, Busquets, Cesc; Neymar, Messi, Iniesta
Whilst we wait for the team news, why no visit our friends at SkyBet for a little flutter. Barcelona 4/7 Draw 15/4 Man City 4/1.