Arsenal 0-2 Barcelona - Juventus 2-2 Bayern Munich: Uefa Champions League last 16 as it happened

That is all from us, but stay tuned to IBTimes UK for the latest post-match reaction.

We will also be back tomorrow night to bring you live coverage of Dynamo Kiev vs Manchester City and Atletico Madrid's trip to PSV Eindhoven. Until then, goodnight.

A desperately frustrating end to an otherwise positive night for Arsenal. Wenger's side defended well for the most part but ultimately just could not prevent Messi from turning the tie firmly in Barcelona's favour.

Guardiola, meanwhile, will be furious that his Bayern side have tossed away a two-goal lead at Juventus. They do have the luxury of those away goals, however.

Full-time

Juventus 2-2 Bayern Munich

It's all over at the Emirates and we are deep into three minutes of added time at Juventus.

Full-time

Arsenal 0-2 Barcelona

Strong goalkeeping from an alert Cech as he turns Neymar's header behind.

Thiago Alcántara picks out Bayern teammate Benatia from a corner, but the Moroccan's header ends up on the roof of the net. Vidal is then booked for tripping Morata and Neuer holds a powerful strike from Bonucci.

Three minutes of added time signalled by the fourth official. Can Arsenal give themselves any hope?

Franck Ribery on for Bayern, who withdraw Costa.

Ramsey is struggling for Arsenal after an accidental collision with Koscielny.

Pique enters the referee's notebook for an obvious foul on Welbeck down the Arsenal left. That is significant for the Barcelona centre-back as it means that he will be suspended for the second leg.

The substitute cameo from hell for Mathieu Flamini, who brings down Messi in the penalty area approximately a minute after replacing Coquelin.

The world's best player then sends Cech the wrong way from the spot. Arsenal will need a monumental effort at the Nou Camp in three weeks' time.

Goal: Arsenal 0-2 Barcelona (Lionel Messi)

No shortage of drama at the Emirates either. Suarez hits the base of Cech's left-hand post after being teed up by Messi and Ter Stegen reacts well to stop Ramsey connecting with Welbeck's useful header.

Jubilant scenes at Juventus Stadium as the Bianconeri level the tie. Mandzukic sends a high ball out to Morata, who heads it back across goal where Sturaro, on for Sami Khedira, arrives ahead of his marker to score from just a few yards out.

Goal: Juventus 2-2 Bayern Munich (Stefano Sturaro)

Wenger responds to that tough setback by throwing on Welbeck in place of the largely ineffective Giroud.

A change apiece in Turin, where Mehdi Benatia, who has not featured since early December due to injury, replaces Bernat and Alvaro Morata is on for Dybala.

Chances for Juventus to equalise, but Neuer stands strong to divert Cuadrado's powerful drive over the top and Pogba curls his effort just too high.

Lewandowski has been cautioned for a foul on Cuadrado.

Guess who?

71 minutes gone and Barcelona end the stalemate with a ruthless counter-attack. Pique's defensive header picks out Iniesta, who lobs the ball on to Neymar.

He quickly finds Suarez and collects the return pass unmarked. The 24-year-old then commits the attention of Bellerin and Monreal before finding Messi, who takes a touch and waits for Cech to go to ground before firing in.

Just like that.

Goal: Barcelona 1-0 Arsenal (Lionel Messi)

Half-hearted appeals for an Arsenal penalty as Ramsey's shot looks to hit Pique's hand. Referee Çakir is unmoved.

At the other end, Mertesacker produces a crucial block to thwart Messi. Suarez then fools Monreal with a cute dummy but Neymar doesn't gamble on his low diagonal cross and the ball rolls out for a goal kick.

A lifeline for Juventus as makeshift Bayern centre-back Kimmich struggles to deal with Cuadrado's long ball forward. That mistake allows Mandzkuic to thread a pass through to Dybala, who slots home from close range with the minimum of fuss.

Goal: Juventus 1-2 Bayern Munich (Paulo Dybala)

Real pressure from Arsenal but they are denied a goal by a wonderful low save from Ter Stegen to parry Giroud's header.

Bayern double their advantage and it is vintage Robben as he picks up a loose pass from Lewandowski after Vidal's ball forward and cuts inside from the right before drifting beyond Barzagli and rifling a left-footed drive past Buffon.

How many similar goals has he scored in his illustrious career to date? It feels like hundreds.

Goal: Juventus 0-2 Bayern Munich (Arjen Robben)

Ridiculous from Jordi Alba as he tumbles theatrically holding his face following an innocuous coming together with Giroud.

He then looks to move his head towards the striker and is perhaps fortunate to escape punishment.

Arsenal are really under the cosh now. Messi feeds Neymar on the left but the Brazilian's return ball is intercepted at the vital moment by Mertesacker.

Alaba gets forward and hits a left-footed shot that rises and just whistles over Buffon's crossbar.

Barcelona are beginning to exercise similar dominance in London...

Oxlade-Chamberlain's evening is over as he limps off to be replaced by Walcott.

A big right foot from Cech to deny Neymar after the latter had been put through by Iniesta and played onside by Koscielny. Messi looked to be unmarked in the middle but he only had eyes for goal.

One change from Allegri at the break, with Hernanes on for Claudio Marchisio.

Oxlade-Chamberlain is still soldiering on for Arsenal, despite having clearly hurt his calf.

We are back in business at the Emirates. The players have also re-emerged from the tunnel at Juventus.

Wenger will be rightlyfully pleased with that first-half showing. Arsenal have, for the most part, restricted the time and space available to Barcelona's menacing front three and should have scored themselves but for Oxlade-Chamberlain's lack of composure.

Bayern have dominated proceedings against Juventus, meanwhile, and you felt that it was only a matter of time before they took the lead. Muller redeeming himself after his earlier stumble had spurned a glaring chance.

Half-time

Arsenal 0-0 Barcelona

Juventus 0-1 Bayern Munich

Barcelona forge comfortably their best chance of the night on the stroke of half-time as Busquets' ball is helped on by Alves, but Suarez heads just wide at the front post. He should have scored.

Juventus look for a penalty from Martin Atkinson but Dybala is adjudged to have tumbled too easily under minimal contact from Vidal.

The deadlock has been broken in Turin and it is Bayern that have notched a potentially crucial away goal.

After Robben stands the ball up to the back post, Costa's volley back across the face hits Barzagli and falls to the feet of Muller, who makes no mistake this time and drives his shot past Buffon.

Goal: Juventus 0-1 Bayern Munich (Thomas Muller)

Impressive agility from Buffon to palm clear Costa's searching cross after the Brazilian had beat Stephan Lichtsteiner. Not bad at all from the 38-year-old.

Neymar worms his way past Monreal to the byline but his cross is easily picked off by Cech at his near post.

Barcelona have really struggled to create any meaningful opportunities so far tonight. It's not often you can say that.

Oxlade-Chamberlain looks like he will be OK to continue but he is moving very gingerly indeed. Five minutes plus stoppage time remaining at the end of this first half.

Messi wins a free-kick in a central position just outside the Arsenal box after nutmegging Koscielny, but his strike is straight into the wall.

The hosts then look to break quickly but Oxlade-Chamberlain takes a heavy touch and ends up in a heap following a strong but fair covering challenge from Mascherano.

Both players appear to have felt that.

Another save from Buffon, this time to repel Bernat's low shot from the edge of the box. The experienced goalkeeper also does well to hold Lewandowski's header from a Thiago free-kick.

Suarez tries to bundle his way through a wall of red and white shirts but ends up being shepherded out for a goal kick. The former Liverpool striker is adamant that it should be a corner.

Messi appeals in vain for Francis Coquelin to be shown a yellow card after having his arm pulled back by the Frenchman. The 2015 Ballon d'Or winner then heads over.

The atmosphere around the Emirates is certainly heating up and, not for the first time, it is referee Cakir that is the object of supporters' ire.

Arsenal certainly seem committed tonight.

Costa has been booked for Bayern following a foul on Cuadrado. Arjen Robben then blazes over from a difficult angle and Juventus appeal strongly for a penalty as Paul Pogba's cross clearly strikes the hand of Vidal.

Nothing given.

Arsenal come forward with real purpose as Ozil flashes a low ball across to Hector Bellerin, whose shot is deflected by Alves into the path of Oxlade-Chamberlain.

The England man has a real chance to score but his effort lacks quality and is straight down the throat of Ter Stegen. Wasteful.

Wonderful skill from Neymar to glide past Monreal and Oxlade-Chamberlain but he is eventually crowded out and referee Cüneyt Çakir ignores his appeals for a free-kick.

20 minutes gone with no real chances to speak of just yet.

How are Bayern not ahead?

An incisive attacking move involving Lahm and Robert Lewandowski results in the latter unselfishly squaring the ball across to Muller, who looks certain to finish from close range but just loses his footing at the final moment and that allows Leonardo Bonucci to clear.

You would have gambled your house on the German international scoring from there.

Rakitic's blocked shot wins a corner for Barcelona, but Arsenal survive.

There is a good tempo to the game in Italy, where Mandzukic shoots wide after an early cross from strike partner Paulo Dybala. Costa has also flashed another effort past the post.

A crucial intervention from Barzagli denies Bayern an opening goal after Douglas Costa beats Juan Cuadrado with some trademark trickery before whipping the ball across the six-yard box.

In north London, Arsenal win a free-kick after Rakitic fells Sanchez but Ter Stegen claims confidently.

The first shot in anger from Bayern comes courtesy of ex-Juventus midfielder Arturo Vidal, but his long-range drive is parried by Gigi Buffon.

Arsenal look to create a clear-cut opportunity of their own as Ozil pulls the back to Aaron Ramsey from the byline but his shot is blocked by Javier Mascherano.

Nacho Monreal collects a deserved early yellow card for a late challenge on Rakitic. That was a foolish foul to commit so early in the game and Wenger will not be pleased.

Messi flights in a free-kick from a dangerous position on the left-hand flank. Dani Alves wins the flick-on towards the back post but he is flagged for offside.

At the Juventus Stadium, Mandzukic is teed up by Andrea Barzagli for an early chance against his former club but his tame shot is easily held by Manuel Neuer.

A positive start from Arsenal as Mesut Ozil looks to find Giroud with a lofted pass. The French striker then tries to pick out Oxlade-Chamberlain, but Barcelona can clear their lines.

We are underway. Can Arsenal put an end to Barcelona's daunting 32-match unbeaten run?

Around five minutes remaining until kick-off now.

A reminder that we will be primarily focusing upon Arsenal vs Barcelona here, with regular updates from Juventus vs Bayern throughout the 90 minutes.

Juventus boss Massimiliano Allegri, who has been linked strongly with a move to Chelsea in recent months, still cannot call upon Giorgio Chiellini or Alex Sandro due to calf and thigh injuries respectively.

Ghana international Kwadwo Asamoah and Martin Caceres are also injured, although former Bayern striker Mario Mandzukic is back after a month on the sidelines.

In Turin, Bayern partner 21-year-old midfielder Joshua Kimmich with the versatile David Alaba in central defence following a raft of unfortunate injuries to the likes of Javi Martinez, Holger Badstuber and Jerome Boateng.

Captain Philipp Lahm returns, as do Juan Bernat and Thiago Alcântara. Rafinha and Kingsley Coman drop to the bench while Spartak Moscow loanee Serdar Tasci misses out altogether.

In addition to Turan, Barcelona are still missing long-term injury absentee Rafinha. Marc Bartra, Douglas and Sandro did not travel as part of Enrique's 19-man squad.

Former Gunners captain Thomas Vermaelen is in reserve.

Wenger is still without the services of Santi Cazorla, who is hoping to return from a knee injury in time for the second leg in Catalonia next month.

Gabriel recently returned to former club Vitoria for treatment on a thigh problem and Jack Wilshere remains sidelined as he continues to recover from surgery to correct a hairline fracture in his left fibula. Fellow midfielders Tomas Rosicky and Mikel Arteta are also out.

As for Barcelona, Gerard Pique returns to the starting lineup in place of Jérémy Mathieu after being omitted from the recent 2-1 win at Las Palmas. Ivan Rakitic and Sergio Busquets retake their places in midfield, although Arda Turan is suspended.

Marc-Andre ter Stegen is back in goal, relegating Claudio Bravo to his usual substitutes' role. Luis Enrique declined to rest Neymar, Luis Suarez and Lionel Messi at the Estadio Gran Canaria but all three of his formidable 'MSN' attacking triumvirate are fit to start once again.

Arsene Wenger makes nine changes from the experimental side that drew 0-0 with Championship promotion hopefuls Hull in the fifth round of the FA Cup last weekend, with only centre-backs Per Mertesacker and Laurent Koscielny retained.

Alex Oxlade-Chamberlain starts in midfield and Olivier Giroud leads the line alongside Alexis Sanchez. Theo Walcott and Danny Welbeck are both on the bench.

Juventus starting XI to face Bayern Munich: Buffon, Lichtsteiner, Barzagli, Bonucci, Evra, Cuadrado, Khedira, Marchisio, Pogba, Mandzukic, Dybala

Substitutes: Neto, Rugani, Sturaro, Pereyra, Hernanes, Zaza, Morata

Arsenal XI to face Barcelona: Cech, Bellerin, Mertesacker, Koscielny, Monreal, Ramsey, Coquelin, Oxlade-Chamberlain, Ozil, Sanchez, Giroud

Substitutes: Ospina, Chambers, Gibbs, Flamini, Campbell, Walcott, Welbeck

Bayern Munich XI to face Juventus: Neuer, Lahm, Kimmich, Alaba, Bernat, Vidal, Thiago, Robben, Müller, Costa , Lewandowski

Substitutes: Ulreich, Benatia, Ribéry, Rafinha, Alonso, Götze, Coman

Barcelona XI to face Arsenal: Ter Stegen, Alves, Pique, Mascherano, Alba, Busquets, Rakitic, Iniesta, Neymar, Suarez, Messi

Substitutes: Bravo, Munir, Sergi Roberto, Adriano, Aleix Vidal, Vermaelen, Mathieu

Good evening and a very warm welcome to IBTimes UK's live coverage of an eagerly anticipated Champions League night at the Emirates Stadium, where holders and seemingly unbeatable La Liga leaders Barcelona are in town for the first leg of their last-16 clash against Arsenal.

If that mammoth tie is not quite enough to whet your appetite, then there is also the small matter of last year's beaten finalists Juventus hosting Bayern Munich. This season represents Pep Guardiola's last chance to bring European silverware to Bavaria before he departs for Manchester City this summer.

Not bad, eh? Stay tuned for breaking team news and live updates...