Full Time: ARSENAL 0-0 AC MILAN.

Arsenal have tried everything they know but Milan have refused to buckle and will be the happier side going into next month's second leg at the San Siro.

Late drama as Walcott crosses for Adebayor who hits the crossbar with a close-range header when he seemed certain to score.

Walcott strikes a sweet volley towards goal but the impressive Kalac makes a comfortable stop.

Arsenal have four minutes of stoppage time left to grab a dramatic winner.

Wenger plays his final card as Eboue makes way for Theo Walcott.

Hleb sets up Bendtner who wafts a shot high and wide. Is that Arsenal's last chance to break the deadlock?

Free-kick expert Pirlo tries his luck from 35 yards out. It's a dreadful effort though and fails to trouble Lehmann.

Milan, as usual, have played a canny game. They're not the European champions by chance.

Ancelotti makes his final change as Emerson replaces Seedorf.

It's all Arsenal now as Sagna wins a late corner - to comes to nothing though.

The ball bobbles around inside the Milan area and eventually falls to Adebayor who fires his shot straight at Kalac.

Eboue brushes into Jankulovski and falls over inside the penalty area - the referee decides it's a dive and books the Arsenal man.

Milan have definitely recovered from their wobble at the start of the second half as Bendtner runs into a sturdy defensive brick wall.

Milan make a change as Alberto Gilardino comes on for Pato who is suffering from cramp.

Fabregas finds some space for himself but Kalac gets down well to save the Spaniard's shot.

Adebayor finds Eduardo whose shot on goal is woeful. The Croatia international is immediately replaced by Nicklas Bendtner.

Milan are enjoying a good spell as Jankulovski drifts in a cross from the left that Wenger's side eventually clears.

Arsenal survive an almighty scramble inside their area as Pato is eventually denied.

Yellow card for Senderos for a sneaky trip on Kaka.

Kaka has a sniff of a chance but pulls his shot wide from the edge of the area.

Senderos does what he does best - heading Pirlo's cross powerfully away from the danger area.

Milan have settled down again after their rocky patch following Nesta's injury.

It's been a thankless task for Adebayor who has been given little change from a tight Milan rearguard.

Oddo is given acres of space as Senderos back-pedals, but the Milan man fires wide when he should have forced Lehmann to make a save at least.

The game has really opened up since the interval with both sides now seemingly committed to attacking.

Arsenal have been transformed since the break while Milan seem disorganised at the back since Nesta'a departure.

Now it's Eduardo's turn to go close as he fires over the bar after playing a neat one-two with Fabregas.

Fabregas and Hleb set up the unmarked Adebayor who slots the ball home - unfortunately he's offside though.

Another great chance for Arsenal as Hleb bursts into the area and pulls the ball back for Eboue who drags his shot wide.

Marek Jankulovski comes on for Nesta.

Fabregas' corner causes chaos in the Milan defence and the ball comes off Kaka's chest and whistles just past the post.

Nesta receives treatment before the corner can be taken and eventually hobbles off the pitch.

Fabregas leads an Arsenal break which ends with Adebayor winning a corner.

Kaka and Clarence Seedorf have been workmanlike in the Milan midfield but there's been little spark from the visitors so far.

No changes by either coach at the break as Arsenal get the second half underway.

Half Time: ARSENAL 0-0 AC MILAN.

Not a lot to report to be honest. It's all very tight and cautious with chances at a premium. Arsenal have just edged the opening 45 minutes.

Better by Eduardo who sets up Hleb. There's shouts from the crowd for a penalty as the Belarus man goes down but the referee waves play on.

Eduardo needs to get himself involved in the game - the Croatian has been very quiet so far.

Sagna does brilliantly to get a decent cross in, but no Arsenal player can get on the end of his tantalising ball.

Carlo Ancelotti doesn't look too happy, but his side looks to be doing everything that could be asked of them so far.

A rare shot on goal as Mathieu Flamini is found by Eboue but the shot is straight at Kalac who saves easily.

Fabregas' chipped free-kick finds Eduardo who is unable to guide his header on target.

Over-elaborate play by Paolo Maldini ends with Arsenal winning a free-kick in a dangerous position.

Pato pushes Sagna as the two players go for the ball, and the Arsenal full-back collides with team-mate Lehmann. The referee deems it worthy of a booking for the Milan teenager.

Sagna whips in a good cross but Adebayor is unable to connect with the tempting ball.

Gattuso shows remarkable powers of recovery as he returns to the action.

Gennaro Gattuso rolls around in agony after being caught by Hleb - the home fans are suitably unimpressed.

Clear-cut chances are few and far between with neither keeper troubled in the opening third of this tight encounter.

Great play by Massimo Oddo who skips his way down the right but Kaka is unable to profit from his colleague's trickery.

Adebayor shows great pace to get on the end of Cesc Fabregas' long ball, but then hoofs his shot into the stands.

The crowd are hushed as the tactical encounter fails to ignite.

William Gallas tries to inject some pace into Arsenal's play as the hosts continue to edge the proceedings.

Senderos is spoken to by the referee after a trademark clumsy challenge.

After Arsenal's early zest, the match has settled into a cautious, cagey encounter.

Senderos tries to find Adebayor with a long hoof forward, but he hits it too hard and the ball trundles through to Kalac.

Milan continue their close passing, patient game but Arsenal are good enough to hold them off.

Milan enjoy their first spell of possession as the visiting fans find their voice.

Andrea Pirlo shows some great touches in midfield as Milan attempt to settle.

Arsenal have started brightly with Adebayor already a threat.

Emmanuel Eboue's cross is perfect for Adebayor but Alessandro Nesta does just enough to put the Togo man off and the ball runs through to Kalac.

The Gunners will need to reshape their defence to fit in the inconsistent Switzerland international.

Toure is unable to continue so Philippe Senderos comes on to replace him.

An amazing throw by Lehmann goes into Milan's half and Adebayor is almost in before the Milan defence closes him down.

Toure appears to have picked up an injury in the incident as he's helped off the pitch.

Paolo Maldini tackles Bacary Sagna and the ball breaks for Pato whose shot comes off Kolo Toure and deflects away for a corner.

Alex Hleb's ambitious pass is over-hit as Arsenal edge the opening minutes.

The home fans are in good voice as both sides look for weaknesses in their opponents.

Table-topping Arsenal will be keen to wipe away the memory of Saturday's FA Cup drubbing at the hands of Manchester United.

We're off with the visitors getting the match underway.

AC Milan remain the team to beat in Europe. They've won the Champions League five times in the last two decades and seven times in total.

The Rossoneri have been boosted by the news that Zeljko Kalac has been passed fit and starts in goal in place of the injured Dida. Alexandre Pato returns to the team after recovering from an ankle problem while Kaka starts.

Gunners boss Arsene Wenger starts with Jens Lehmann in goal while Eduardo partners Emmanuel Adebayor in attack.

Arsenal host last season's winners AC Milan in a Champions League last 16 first leg encounter at the Emirates Stadium.