Last Updated: 01/10/13 9:36pm
Last chance for Celtic as they pump a free-kick into the box, but Barcelona clear the ball and the referee brings the game to a close and it ends 1-0 to Barcelona thanks to Fabregas' header with Scott Brown seeing red for Celtic.
Neymar is played in on goal by Alexis, but Forster produces another brilliant save to keep out his effort.
Brilliant double save to keep out Neymar's first shot and then getting back to his feet quickly to block Alexis's follow-up effort.
Neymar tries to find Alexis inside the box, but Forster is able to collect the cross before the striker.
Into the final ten minutes now and it is going to take something special for Celtic to get back into this game.
GOAL: Celtic 0 Barcelona 1: Fabregas breaks the deadlock as Alexis breaks down the right and picks out Fabregas who plants his header into the net past Forster.
From the resulting corner Celtic should score as Valdes is caught in no man's land, but Mulgrew heads his effort wide of the target with the goal at his mercy.
Neymar works a one-two with Xavi inside the box, but he can't get his foot sorted out quickly enough and he hits his shot well wide of the target.
20 minutes left and it remains 0-0 but Barcelona have the advantage with Brown being sen off for Celtic.
Double change from Celtic as Forrest comes on for Lustig and Kayal replaces Stokes to stiffen up the midfield.
Fabregas's cross is poor and it goes straight into the arms of Forster with Barcelona having players in the box.
Neymar claims for a penalty as his cross is blocked inside the box, but the referee waves away the Brazilian's appeals.
Samaras wins a free-kick off Busquets and Mulgrew will take the free-kick and his Valdes comes flying out of his goal to take the cross, but he misses it and is lucky to see it fly out of play.
Scott Brown is sent off after appearing to kick out on Neymar after bringing down the Brazilian in full flow.
Alert defending from Pique as Busquets poor header back towards Valdes is read by Stokes, but Pique gets back to cut out the danger.
Things getting a bit scrappy now and Alves is rolling around and is in need of treatment after falling awkwardly, but the full-back looks like he will be okay to continue.
Fabregas is booked for a late tackle on Stokes even though it looked like the former Arsenal man got the ball in his tackle.
Brown has a sight of goal, but he slices his shot well wide of the target. Rare opening for the home side.
Alves is down and in need of treatment after being caught in the face by Izaguirre, but the Brazilian is ok to continue.
More good defending from Ambrose to rob Neymar of the ball inside the box after the Brazilian showed some dancing feet.
The referee brings the first half to a close and the two sides go in at the break all square and Celtic will be happy with that after the opening 45 minutes.
Unlucky from Iniesta as he works a one-two with Neymar, but his touch is too heavy and the ball runs out of play.
Barcelona's best chance so far as Alves' whipped cross is diverted just wide of the target by Neymar inside the box.
Izaguirre is a little wasteful as he overhits his pass towards Commons and the ball runs out of play.
Strong run down the right from Matthews and just as he tries to cross the ball it comes off his other foot and runs out of play.
Poor from Lustig as he gives the ball away with Celtic finding themselves in a good position down the right.
Barcelona still probing and looking for an opening, but they are playing with ten men as Neymar is off the pitch receiving treatment.
Neymar feeds in Neymar down the left, but under pressure from Ambrose he fires his shot into the side-netting.
Neymar is given a ticking off by the referee after going down too easily in a bid to get a free-kick on the edge of the box.
Misplaced pass from Xavi gifts it straight to Samaras, but his cross goes straight into the arms of Valdes.
Ambrose is late on Busquets, but the referee only gives hima ticking off when it could have been a booking for the defender.
Neymar comes in from the left and beats a couple of challenges, but he drags his shot wide of the target.
van Dijk adjudged to have fouled a Barcelona player in the box from the free-kick from Mulgrew and Barcelona win a free-kick.
The referee Stephane Lannoy spots an infringement in the penalty area as Mulgrew curls in the corner and awards Barcelona a free-kick.
Great move from Celtic as Stokes slips Samaras inside the box, but Valdes is out quickly to keep out his shot from a tight angle as Celtic win their first corner of the game.
The corner is cleared and drops to Alves on the edge of the box who sees his fly wildly over the crossbar.
Lovely skill from Iniesta as he nutmegs Ambrose, but van Dijk is on the cover to clear the danger for a corner.
Nice early glimpse of what Neymar has to offer as he skips past Lustig as Barcelona not suprisingly dominating possession.
Chris Green from Huddersfield is hoping Celtic can pull off another shock, but his head tells him Barcelona to win 3-0.
Sean McAllister believes the loss of Messi gives Celtic a major boost as they look to pull off another win over Barcelona.
Rod Stewart was in tears after last season's win over Barcelona. I wonder what famous faces will be in the crowd this team.
It will be interesting to see how Neymar fares tonight with more onus on him in the absence of Messi.
Celtic have won only one of their six Champions League games against Barcelona (1 draw, 4 defeats). That solitary win came in last season's group stages at Celtic Park.
Barcelona have only won 2 of their last 8 Champions League games away from home (2 draws, 4 defeats).
Celtic have only suffered 3 defeats in 24 Champions League home games, but 2 of these were against Barcelona.
The two goalscorers for Celtic in last season's game are not involved in this game with Victor Wanyama sold to Southampton and Tony Watt loaned out to Belgium.
Feel free to air your opinions throughout the game. You can contact me direct at Peter.O'Rourke@bskyb.com, or Tweet me @skysportspeteo.
If you would like to get in contact at any point this afternoon then please don't hesitate. You can mail me via the Score Centre, email me direct on firstname.lastname@example.org and you can also now Tweet me: @skysportspeteo.
If you fancy a flutter on tonight's game, why no visit our friends at SkyBet for a little flutter. Celtic 7/1 Draw 4/1 Barcelona 2/5.
Celtic XI v Barcelona: Forster; Lustig, Ambrose, Van Dijk, Izaguirre; Matthews, Brown, Mulgrew, Samaras; Commons; Stokes.
Barcelona XI v Celtic: Valdes, Alves, Bartra, Pique, Adriano, Sergio, Xavi, Iniesta, Neymar, Cesc, Pedro.