John Hartson
BBC Radio 5 live at the Emirates Stadium

Image source, Getty Images

"Arsenal I think will be slightly disappointed they aren't in front although Bayern have controlled possession. Neuer has kept Bayern in the game."

No goals in our two main games this evening but plenty to admire. If anyone stops Bayern Munich from winning the Champions League this season they'll deserve it...

Douglas Costa! Not Diego. Obviously...

Image source, Reuters

AS Romashow nothing will wake you up like being on the brink of exiting the Champions League. Daniele De Rossi has rattled in a brace from midfield inLeverkusento cancel out Javier Hernandez's two early goals.

 Vincent Aboubakar and Yacine Brahimi have scored for PortoagainstMaccabi Tel Aviv.They lead 2-0 anda win would put them on seven points at the top of Chelsea's group.

Gentare level againstValencia, Zenitstill leadLyon1-0.

Shoddy! Very shoddy from Alexis Sanchez as he turns on halfway and plays a blind backpass straight to Douglas Costa. The Bayern man drives on at goal and shoots - but it's always over the bar. 

Kiev having a good spell after Chelsea's strong opening to the game. The men in white are keeping the ball easily as the half clicks on, and Kurt Zouma has to step in to make a strong tackle to prevent a dangerous cross. 

Phil McNulty
BBC Sport chief football writer

Image source, Getty Images

"Arsenal may be feeling the heat at the back but they look a real danger going forward. Their only problem is that when they get through they still have to beat Manuel Neuer and surely no-one can dispute he is the world's best."

Arsenal are ending this half really well, Theo Walcott a menace in behind with his pace and movement. Walcott has another shot easily held by the German number one this time. 

You may not be surprised to know Bayern Munich chose to re-tweet this from Gary Lineker...

Mario Gotze and John Hartson are in tandem...

Image source, Rex Features

Would Olivier Giroud have scored that header? You wonder. It was a brilliant save though, top, top ,top drawer...

John Hartson
BBC Radio 5 live at the Emirates Stadium

Image source, AP

"By the way you will not see a better save than that all season. I tell you something, what a world class save there. You need your goalkeeper, who has not had a lot to do, to just produce that magnificent save."

Image source, Reuters

Superman! Clark Kent himself would be pleased with that as Manuel Neuer makes a phenomenal save!

Theo Walcott, unmarked six yards out, firm header, half the ground celebrating until Neuer sticks out a left hand and somehow keeps it out!

Schmeichel-esque! Seaman-esque, FA Cup semi-final stuff...

John Hartson
BBC Radio 5 live at the the Emirates Stadium

"A deep corner from Cazorla, drops to Sanchez and he controls it brilliantly with his chest.He's better than that. He'll be disappointed with his quality. Blasted over the bar. He will be disappointed with that because he knows he's technically very good from that distance."

You can listen to John Hartson on BBC Radio 5 live by clicking live coverage at the top of this page.

Image source, Opta

Arsenal blew away Manchester United before the international break, absolutely dominating possession inside the first quarter-of-an-hour as they raced into a two-goal lead. United just couldn't handle them.

It is different story today, with Bayern Munich dictating play as much as Arsenal did against their Premier League rivals back on 4 October.

To Arsenal's credit, though, they are keeping the German side at bay, and creating one or two chances.

Image source, Opta