Williamson has not only taken Little's armband, but also her place in central midfield.

Wubben-Moy slots into centre back.

Arsenal have responded well to that set back, firing a few crosses into the Bayern area in succession.

None of them bring a clear chance, but that's the energy they need.

Emma Sanders
BBC Sport at Emirates Stadium

Jonas Eidevall was in deep conversation with the officials following that challenge. It looked like a very poor decision given Kim Little was clearly fouled.

Kim Little is able to walk off, but her game is over. A huge blow for Arsenal.

Lotte Wubben-Moy replaces Little, who hands the captain's armband to Leah Williamson.

Image source, Getty Images

Little is still getting treatment. This is very concerning for Arsenal, and the stretcher is coming on.

After the injuries to Mead and Miedema, the last thing Arsenal need is another key player on the treatment table.

Image source, Getty Images

In the breakaway by Arsenal following the corner, Kim Little was chopped down by Sarah Zadrazil. For some reason, the referee deemed it not a foul.

Little is still getting treatment, and Jonas Eidevall is not a happy bunny.

A Bayern free kick wide on the right is headed behind by Walti, for the first corner of the game.

It is taken quickly, however Arsenal are aware enough to clear.

Gilly Flaherty
Former England defender on BBC Radio 5 Sports Live

Without Vivianne Miedema and Beth Mead, Arsenal will be looking to Caitlin Foord to lead the line and bring that energy.

She is a fantastic one v one player and that’s what we need to see tonight.

After the opening stages were played in their half, Arsenal push forward via Caitlin Foord on the left.

She plays in a low cross which almost finds Pelova, however Bayern defenders gather and eventually scramble away.

Laura Bassett
Former England international on BBC Radio 5 Live

Arsenal will be full of confidence after the convincing win at the North London derby.

They will hope the crowd can be the 12th player, it’s a great energy.

They need to start this game well to really take this game to Bayern.

There are a fair few empty seats dotted around the areas of the Emirates open to fans tonight, it looks like the weather has kept a few people away.

Still a very good crowd in though, and a decent atmosphere in the early stages.

Laura Bassett
Former England international on BBC Radio 5 Live

Image source, Getty Images

I’ve watched Bayern Munich a few times this season and I can’t speak highly enough of Georgia Stanway.

She has settled in so quickly to the team, she’s offered balance to the midfield and it’s like she has been playing there for years.

To do that at her age, in her first season, is a real big hat tip to her. She has done exceptionally well.

Emma Sanders
BBC Sport at Emirates Stadium

There's a great crowd here. The fans to my left have already started a loud chant of "Ar-se-nal" and there was a big roar at the kick-off whistle.

Here we go!

Arsenal XI: Zinsberger, Maritz, Williamson, Rafaelle, McCabe, Walti, Little, Maanum, Pelova, Foord, Blackstenius.

Subs: D'Angelo, Mackese, Beattie, Wubben-Moy, Goldie, Wienroither, Kuhl, Hurtig, Agyemang, Reid.

Bayern Munich XI: Grohs, Rall, Viggosdottir, Kumagai, Hansen, Zadrazil, Stanway, Magull, Buhl, Schuller, Kett.

Subs: Benkarth, Runarsdottir, Damnjanovic, Lohmann, Bragstad, Vilhjalmsdottir, Laurent, Landenberger, Gloning, Rudelic.

And here come the teams.

To the sound of the Women's Champions League anthem, which in my view is an underrated banger as far as football competition anthems go.

Image source, PA Media

We're getting a pre-match light show at the Emirates, to gee the crowd up and try and distract them from the weather.

It is absolutely tipping down in north London.

Image source, Getty Images

Right, five minutes to kick-off, it's time for a quick poll.

Who do you think will be progressing to the semis from this tie? Thumbs up for Arsenal, thumbs down for Bayern.

Have your say, hit those thumbs.

Emma Sanders
BBC Sport at Emirates Stadium

The last time Arsenal played a Women's Champions League game here at the Emirates, they lost 1-0 to Lyon and Vivianne Miedema suffered an ACL injury.

She's in the stands tonight alongside fellow injured team-mate Beth Mead, who was just applauded onto the pitch to do an interview with Arsenal TV while the players wrapped up their warm-ups.

Mead didn't hang around for long because it's absolutely chucking it down!

Vicki Sparks
BBC commentator

The rules in the Women’s Champions League, from the quarter-final stage, is that you have to have VAR.

So every tie has VAR, but it is up to the clubs across the competition whether they bring in goalline technology.

We do have goalline technology at the Emirates tonight because Arsenal have made the decision to use it.

I can’t remember a game where they have had VAR but not goalline technology. Yes it is a different set up, but you need fewer cameras to employ goalline technology than VAR.

If you’re going to have VAR in the quarter-finals, surely you make goalline technology standard as well.

Inconsistent technology 'a problem' - Eidevall