Full time: Arsenal 0-2 Barcelona
The referee blows his final whistle
90+1' Cech saves Arsenal! They almost concede the third but he produces a superb save to thwart a Neymar header.
88' Arsenal will have an uphill climb in the second leg if they do not score any goals in the dying minutes.
85' Barca defender Pique receives a yellow card. He will miss the second leg at the Nou Camp.
84' Messi sends Cech the wrong way from the spot after he is felled by a reckless challenge from Flamini.
83' GOOOAAAAAAAAAAAL FOR BARCA!!
83' PENALTY FOR BARCELONA!!
82' The last substitution for Arsenal. Mathieu Flamini replaces Coquelin.
82' Arsenal are struggling. They seem demoralised after falling behind and Barca may add a second in the latter stages.
78' Barca are so unlucky!! Suare'z close-range shot with the goal at his mercy hits the post after another electrifying counter attack.
76' Barcelona move the ball around smoothly after going ahead.
73' Arsenal make their second substitution. Giroud is replaced with Danny Welbeck.
71' In a pacy counter attack, Neymar makes a darting run down the left, feeds Suarez and receives the return pass. With two defenders approaching, he squares the ball for the unmarked Messi, who wrong-foots Cech and places a shot into the empty net.
71' GOOOOOOOAAAAAAAAL FOR BARCELONA!!!
69' A low Arsenal cross from the right is cleared by the defence. The brave Gunners are proving a match for the mighty Barcelona.
66' A chance for Barca at the other end!! Firstly, a Messi shot is blocked by Mertesacker. The ball then rebounds into the path of Suarez whose angled shot goes across the face of the goal for a goal kick.
65' Successive Arsenal shots are blocked by the Barca defence.
62' Arsenal still defend doggedly.
60' A chance for Arsenal! Ter Stegen produces a superb one-handed save to block a close-range Giroud header.
60' Ozil breaks clear on the left after a threaded pass but his pass to Giroud is intercepted.
58' There is a tense atmosphere now after some flying kicks at both ends.
55' A flowing Barca move sees Messi finds Neymar but the latter's attempt on a return pass is intercepted by Mertesacker.
52' Barca apply pressure in the early stages of the second half. They look livelier!
50' The first chance for Arsenal. Theo Walcott replaces Oxlade-Chamberlain.
48' Another chance wasted by Barcelona!! Neymar breaks clear following an Iniesta pass but his shot is blocked by Cech. The best clear-cut opportunity for Barca!
The second half is underway
The referee blows his halftime whistle
45+1' A brilliant chance wasted by Barcelona!! Busquets releases Alves with a superb long ball and the Brazilian full back's first-timer goes to the unmarked Suarez, whose header goes just wide with the goal at his mercy.
55' The first chance for Barcelona!! Messi finds the unmarked Jordi Alba with a threaded pass but the latter's attempt to square the ball fails as Arsenal's defence intervenes at the last minute!
44' Messi is well shackled by Arsenal's tight defence.
41' A half-chance for Barca! Neymar cuts inside and finds Rakitic, but the Croatian opts to square the ball for Messi instead of shooting. Messi's eventual effort is blocked by the defence.
40' Five minutes remaining before the halftime of a very cautious clash.
37' Oxlade-Chamberlain receives treatment after colliding with Javier Mascherano following a breakaway.
36' A poor low free kick from Messi is blocked by the wall.
35' A free kick for Barcelona after Messi is fouled on the edge of the area. A dangerous position!
33' Suarez jinks into the area and tries to muscle his way between two defenders. He then mis-controls the ball and it goes out for a goal kick.
31' A Neymar cross is headed wide by Messi in a rare sight of goal for Barcelona.
29' Arsenal are furious after Messi is awarded a foul for a challenge by Francis Coquelin.
26' Alexis is very dangerous on the break!
25' Pique clears a low cross after a fast Arsenal counter attack orchestrated by Alexis Sanchez.
23' Arsenal spurn the first real opportunity of the night.
22' What a chance for Arsenal!! Oxlade-Chamberlain fires straight into a defender with the goal at his mercy after a blocked shot leaves the keeper wrong-footed.
20' Still no threats at either end after the first 20 minutes.
18' Barcelona lay siege to Arsenal's area but the Gunners are perfectly closing down spaces.
16' Iniesta exchanges passes with Suarez but his cross is collected by Arsenal keeper Petr Cech.
14' The corner is cleared but Barcelona still have the ball.
14' Barca's Ivan Rakitic tries his luck from distance but his deflected shot goes out for a corner.
13' A slow start for Barcelona as Arsenal seem more organised in the first quarter of an hour.
10' All eyes are on Barcelona's fearsome trio upfront, but they are yet to carve out openings.
7' A ball is pulled back to an Arsenal forward following flowing Arsenal move involving Ramsey and Ozil but the Barcelona defence blocks his tame effort.
6' Arsenal left-back Monreal is booked for a challenge on Ivan Rakitic.
5' Barcelona begin their trademark possession game.
3' A free kick is floated into the Barcelona area but Suarez is in an offside position.
2' Arsenal seem intent on pushing forward from the early stages. Despite the attacking exploits of Barcelona's MSN, their defence is somewhat shaky.
The match is underway
21:30 Only 15 minutes remaining before kick-off. The atmosphere will surely be electric at the Emirates Stadium.
21:10 No surprises in the starting XI of both sides. The question is, how will Arsenal's defence deal with MSN?
20:45 Arsenal's starting XI: Peter Cech, Nacho Monreal, Laurent Koscielny, Per Mertesacker, Hector Bellerin, Aaron Ramsey, Francis Coquelin, Alexis Sanchez, Mesut Oezil, Alex Oxlade-Chamberlain, Olivier Giroud
20:30 Barcelona's starting line-up: Marc-Andre ter Stegen, Daniel Alves, Gerard Pique, Javier Mascherano, Jordi Alba, Sergio Busquets, Ivan Rakitic, Andres Iniesta, Neymar, Lionel Messi, Luis Suarez
20:20 The line-ups will be released shortly, little more than an hour before the anticipated clash.
19:30 Barcelona are seeking to become the first side in the Champions League era to win back-to-back titles.
18:45 Arsenal will miss midfielders Mikel Arteta, Santi Cazorla, Jack Wilshere, Tomas Rosicky and defender Gabriel Paulista, all through injury.
18:15 Barcelona will miss injured defender Rafinha and suspended midfielder Arda Turan.
17:45 Barcelona coach Luis Enrique said: "On paper this is one of the most attractive and appealing games if you like this kind of football. Arsenal are a good team, strong in the transition and with really good players up front. They will press high at times but I hope we can keep the ball in their half and impose our own game."
17:30 Arsenal coach Arsene Wenger said: "No team is perfect, but Barcelona are not far from it. We need to take our chances. We will have less of the ball than against Hull, but we have to make the most of it."
16:00 Enrique scored in a 1-1 first-leg draw at the Nou Camp and then again in a 4-2 win at Wembley Stadium, Arsenal's temporary home for Champions League matches
15:45 Luis Enrique takes on Arsenal for the first time as Barcelona's coach. However, during the midfielder's playing career, he scored in both matches when the clubs et in the group stage of the Champions Leaue in 1999
15:00 Sanchez was lackluster as a substitute but manager Arsene Wenger has no doubts about the Chile international's readiness to face the side he left in 2014 after three years.
14:30 Ozil, Ramsey and Petr Cech will return for Arsenal after being rested for Saturday's goalless FA Cup draw with Hull, while Sanchez and Olivier Giroud are set to start after being on the bench.
13:45 Barcelona has beaten Arsenal in their two previous meetings in the knockout stages, with Messi scoring all four goals at the Camp Nou in 2010 as the hosts romped to a 4-1 victory on the night and a 6-3 win on aggregate.
13:00 Arsenal's attacking football has taken the team to the last 16 of the Champions League, third place in the Premier League title race and the fifth round of the FA Cup.
12:15 Tactically and physically, Barcelona will ensure the first leg at Emirates Stadium will be one of the toughest matches the hosts have faced in a very long time.
11:45 In Lionel Messi, Luis Suarez and Neymar, Arsenal faces the most potent strike force in the game - and a team that will probably be more than halfway to the Champions League quarterfinals after Tuesday's match.
Venue: Arsenal Stadium, London (ENG)
Referee: Cüneyt Çakır (TUR)
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