Image source, Getty Images

Francis Edwards: Only one team in the world who can go down to 10 men and look like they're playing with 14, that is FC Bayern Munich.

Image source, Reuters

France winger Kingsley Coman, who played against England recently, nods in Thomas Muller's headed ball in the area.

This is easy street for the German champions - but did we expect anything else?

Jermaine Jenas
Ex-Spurs and England midfielder on BBC Radio 5 live

On Arsenal's chances of winning a last-16 tie: "Over two legs I'm not sure they have what it takes defensively."

Image source, Reuters

John Terry has picked up an injury - I didn't see what happened - but he is leaving the field on a stretcher. Kurt Zouma is on. 

Image source, EPA

Simon Murphy: Fabregas has been woeful once again. Give Loftus-Cheek a chance!

Andrew Neill: Hard work done for Arsenal. Get Ozil or Sanchez off with Jeff Reine-Adelaide coming on!

Eden Hazard, it's just not happening for him. He comes off and Pedro is on for the last 20 minutes. Remember, as it stands Chelsea are not through tonight. 

Jermaine Jenas
Ex-Spurs and England midfielder on BBC Radio 5 live

"That goal was all about Joel Campbell. He's had a brilliant game. He threads a fantastic ball between the two defenders - I don't know how he saw it. Alexis Sanchez does brilliantly to take it round the keeper."

Jermaine Jenas
Ex-Spurs and England midfielder on BBC Radio 5 live

Image source, Reuters

"I think Olivier Giroud has looked a little tired and subdued today. None of the injured Arsenal players has been missed more than Aaron Ramsey - the job that he does is hard to replicate."

Aaron Ramsey is back after a long spell out injured. He's just become a new dad too. Just over 20 minutes left for him to have a run out. Get back up to speed. 

Lifa Nati: A lot of those Chelsea players don't look interested against 10 men. Why is the manager not making any changes?

A flurry of chances at either end! Eden Hazard has a stinging half-volley well saved, Cesar Azpilicueta then also sees his strike pushed clear before the hosts counter and Eran Zahavi has a shot saved by Asmir Begovic. A second Chelsea goal is definitely needed to settle the nerves.

Phil McNulty
BBC Sport chief football writer at Emirates Stadium

This game is already being played as if it is moving towards an inevitable conclusion as Arsenal remain in complete command.

Of course one goal from Dinamo Zagreb would change the mood completely but it is hard to see where that is coming from at the moment.

Image source, AP

Poor Wojciech Szczesny. The Roma keeper, on loan from Arsenal, fails to push away Lionel Messi's first-time shot, allowing the Argentine to tap in his second.

Guess which players combined in the build-up?

Neymar on the left, laid the ball of to Luis Suarez, whose mishit shot arrived at the feet of Messi, who did the rest.

Joel Campbell is the man on the end of a neat passing move, a defender just gets a slight touch to the ball and it puts the Costa Rican off a touch, and he shins the effort wide in the end. 

Image source, AFP

Viv:@ChelseaFC, external really needs to step it up a notch. Goals needed to kill off this game before they concede an equaliser.

Arsenal are not exactly going through the motions but they are taking it easy now. They know they've done the hard work. 

Ian Dennis
BBC Radio 5 live senior football reporter

Image source, AP

"With the quality that Arsenal have, you wouldn't bet against them getting the result they need at Olympiakos."