Bayern Munich 5-1 Arsenal – Real Madrid 3-1 Napoli: Champions League last 16 - as it happened

Well what a stunning evening of Champions League football. The knives are out for Arsene Wenger and Arsenal after they are embarrassed by Bayern Munich, while Real Madrid overcome Napoli after going behind.

That brings an end to our live coverage, but we'll have all the reaction from both games over the next 24 hours. The fall out from the events at the Allianz Arena is sure to reverberate around football. Until next time, goodbye.

Full time: Bayern Munich 5-1 Arsenal, Real Madrid 3-1 Napoli

This has been an absolute humiliation for Arsenal. I can't imagine Arsene Wenger can survive this.

GOAL! Bayern Munich 5-1 Arsenal (Thomas Muller)

Goodnight Arsenal, and perhaps Arsene Wenger as well. Thomas Muller has just come on and he cuts inside and smashes in. The humiliation is complete.

Philippe Lahm out of the second leg as he fouls Alex Oxlade-Chamberlain. Another goal for Arsenal would very much keep this tie alive. Can they get it though?

Napoli believe they have a goal back but they are denied by the offside flag. Callejon, formerly of Real Madrid, slides in at the back post bu the assistant chalks off a goal on his return to the Bernabeu.

Real also threatening to put Napoli out of sight and Toni Kroos carves open the visitors with a delicious through ball, but Reina comes out to save from James.

Thiago Alcantara drives goalwards to further extend Bayern's lead.

Ospina pushes out Vidal's strike as Bayern look to repeat the 5-1 scoreline they inflicted upon Arsenal last season.

How most Arsenal fans are feeling...

GOAL! Bayern Munich 4-1 Arsenal (Thiago Alcantara)

This looking like a bridge too far for Arsenal already. Thiago shoots from 20 yards and via a deflection off Xhaka it goes beyond Ospina. Three goals in nine minutes since Laurent Koscielny went off.

Toni Kroos rejoices after putting Real ahead for the first time.

GOAL! Bayern Munich 3-1 Arsenal (Thiago Alcantara)

Superb team goal and have Bayern extinguished Arsenal's hopes here? Lewandowski flicks the ball round the corner and Alcantara is all along and he strokes past Ospina. Suddenly, Arsenal's future in this competition looks precarious once again.

GOAL! Real Madrid 3-1 Napoli (Casemiro)

Oh my, I've gone too early with the goal of the night prize. A Real attack breaks down but Casemiro lashes the loose ball, on the volley, into the corner from 25 yards. A truly stunning strike.

GOAL! Bayern Munich 2-1 Arsenal (Robert Lewandowski)

Arsenal concede just minutes after losing their captain. Philippe Lahm crosses from the right and Lewandowski leaps highest and powers a header beyond Ospina.

Injury for Arsenal captain Laurent Koscielny as he is replaced by Gabriel less than five minutes into the second half. Big blow for the Gunners, with Sutton United to come next week.

GOAL! Real Madrid 2-1 Napoli (Toni Kroos)

Sloppy start from the hosts is replaced by them taking the lead. Ronaldo gets to the byline and pulls it back for Kroos, who sweeps the ball back past Reina, who looked blinded by his own defence. Fine goal.

Players out and we're back underway in the second halves in Munich and Madrid. More of the same, please.

Half time: Real Madrid 1-1 Napoli

Also half time at the Bernabeu where Real Madrid have dominated but Napoli will be the happier. Lorenzo Insigne netted the goal of the night to put the Italians ahead, before Karim Benzema's headed equaliser. The hosts should be out in front by now, but Pepe Reina has been in inspired form on his return to Spain.

Half time: Bayern Munich 1-1 Arsenal

This is turning into a classic Arsene Wenger performance from Arsenal. So much criticism in recent weeks, but they remind everyone of their ability just at the right time. The Gunners have held their own, had the better of the chances and are deservedly level. Alexis Sanchez opened the scoring, after Arjen Robben's early stunner. Just what the doctor ordered.

Real Madrid pushing hard and should be ahead. Ronaldo plays the ball round the corner and Benzema nips in, but the pressure from Reina is enough to see the effort go off target.

Bayern go close to re-taking the lead. Alaba crosses and Lewandowski leaps, but miss-times the header.

What a chance for Arsenal! They build well through Sanchez again, and when Oxlade-Chamberlain pulls his cross back to the edge of the area Xhaka hits it first time but straight at Neuer.

Alexis Sanchez delivers a crucial equaliser for Arsenal.

Bayern feel there is an injustice after the penalty award, which was as stone wall an award as you're ever likely to see. They want a spot-kick of their own as Bellerin handles Alaba's cross, but there is nothing to see there.

Yellow card for Alexis Sanchez as this game threatens to boil over, as the game goes over the 30-minute mark. Sanchez lunges in on Hummels, and is rightly cautioned. At the moment, his composure is handing Arsenal a crucial result.

GOAL! Bayern Munich 1-1 Arsenal (Alexis Sanchez)

A lifeline for Arsenal in the tie. Robert Lewandowski takes a swing at the ball and only connects with Laurent Koscielny. Referee Mazic has no choice but to point to the spot. Neuer saves the spot kick but Sanchez shows brilliant composure, taking the bouncing ball down and volleying into the net.

Penalty to Arsenal

More success for Sanchez now though, has he scampers away down the right and away from Mats Hummels, who has no choice but to bring the Chilean down just outside the penalty area. Sanchez wanted a penalty but nothing doing in that regard.

Ozil and Sanchez over it. The former takes it, Neuer spills the ball but Bayern hack the ball behind. There was an offside in amongst that, but a ray of light nonetheless for the visitors.

Alexis Sanchez is burrowing a lone furrow at the head of the Arsenal attack. He is released down the right, but is soon swallowed up by the Bayern defence.

GOAL! Real Madrid 1-1 Napoli (Karim Benzema)

Napoli's lead lasts just 11 minutes as Real equalise straight away. Daniel Carvajal crosses with the outside of his right foot and Benzema leaps highest at the back post to crash a header beyond Reina.

Arjen Robben gives Arsenal that sinking feeling again with the opening goal.

Lorenzo Insigne celebrates putting Napoli ahead in the Bernabeu.

GOAL! Bayern Munich 1-0 Arsenal (Arjen Robben)

The writing is on the wall for Arsenal as they fall behind inside 11 minutes. Arjen Robben hits one from 25 yards, wide on the right and it is a screamer; flying past David Ospina.

GOAL! Real Madrid 0-1 Napoli (Lorenzo Insigne)

The defending champions stunned by the Italian visitors. It is an absolute stunner from Lorenzo Insigne, who is played through and instead of running towards the box spots Keylor Navas out of position and curls it past the Real 'keeper. Such a clever goal.

First test of David Ospina's metal, getting down low to save from Arturo Vidal's left-footed effort. Busy night ahead for the Arsenal 'keeper, you'd think.

First chance of the night and it comes for Real Madrid. Cristiano Ronaldo crosses from the left and Karim Benzema meets it first time, forcing Reina into punching the ball clear first time.

Teams out in Munich and Madrid and we're almost ready for kick-off. Two stages fitting of the competition. Hopefully, the quality of football lives up to the billing. Updates on the way.

So how will our coverage work tonight? Bayern Munich and Arsenal's clash in Bavaria is our featured game, while we'll also have updates from Real Madrid vs Napoli. No need to go anywhere, really.

Bayern fans arrive at the Allianz Arena ahead of kick-off.

Some news from Germany where Arsene Wenger suggests Ozil will operate as a second striker tonight, with four "real midfielders" being employed in the middle. Plenty of work for Oxlade-Chamberlain and Iwobi by the sounds of it.

Which Mesut Ozil will turn up this evening? Arsene Wenger hinted strongly that he could be dropped tonight, but he has played his out-of-form playmaker. Can he rise to the occasion, like he has done so infrequently for Arsenal since joining from Real Madrid?

Carlo Ancelotti is the king of the Champions League. Twice a winner as a player, three times as a manager. Can the Italian win the crown with a third different club this season?

Granit Xhaka's domestic ban is over and he returns for Arsenal tonight having missed the last four games. But can Wenger rely on the Switzerland international to keep his head tonight? He has been sent off twice already this season and has a reputation for losing his head.

How might Arsenal actually fair tonight? Bayern Munich are not the force they were when Pep Guardiola was in charge, but the Gunners are at one of their lowest ebbs. Out of the title race, it is around spring time the club's season starts to unravel. They have been knocked out at this last 16 stage in the last six seasons.

Gary Lineker will be working for BT Sport in Munich tonight. How either side would love to be able to call upon him tonight. Though maybe not Arsenal, given his links to Tottenham.

Now to the Bernabeu where the teams for Real Madrid vs Napoli have been confirmed.

For fans of info graphic team line-ups, here is your fix courtesy of Arsenal....

Two changes also for Arsenal tonight, mirroring their hosts. David Ospina as expected comes in for Petr Cech, while Theo Walcott is on the bench with Granit Xhaka returning.

That Arsenal team, for those hard of reading....

Ospina, Bellerin, Mustafi, Koscielny, Gibbs; Xhaka; Coquelin, Oxlade-Chamberlain, Ozil, Iwobi; Sanchez.

Arsenal team has also dropped, thanks to the Bayern Munich Twitter account.

Two changes for Bayern Munich from the win over Ingolstadt at the weekend. They come on either wing with Arjen Robben and Douglas Costa coming in for Thomas Muller and Joshua Kimmich.

Bayern Munich team is in...

Can Wenger square the rivalry tonight?

It may have been Valentine's Day yesterday, but I can't imagine Bayern Munich will have any compassion for Arsenal tonight if previous meetings are anything to go by. The Bavarians have a superb record over the Gunners, winning 5-1 when the two sides met last at the Allianz Arena. That night a certain Robert Lewandowski set the ball rolling with the opening goal. He has 30 goals in 33 appearances this season. Gulp.

Teams for both games should be confirmed within the next half an hour, but until then how do we expect both sides to line up?

Bayern Munich are without Franck Ribery and Jerome Boateng due to thigh and chest injuries, but Xabi Alonso is available after a knee problem.

Arsenal will start with David Ospina in goal. Mesut Ozil could be dropped for the return to his homeland, while Lucas Perez and Aaron Ramsey are both out.

Arsenal return to the last 16 of the Champions League with a familiar feeling of dread. The Gunners have not progressed beyond this stage since 2010 and for the third time in four seasons they have been paired with Bayern Munich, who have never missed when faced with Arsene Wenger's side.

Can Arsenal buck the trend and cause a surprise at the Allianz Arena, or will Carlo Ancelotti's misfiring Bayern prove too strong again for the Premier League side? Teams news followed by all the updates ahead of the 7:45pm GMT kick-off on the way.

Elsewhere, the defending champions Real Madrid resume their campaign aiming to become the first side to defend the European Cup in the Champions League era. They qualified second from their group and will face Serie A side Napoli in the first leg at the Bernabeu.