Exactly the first half Renee Slegers would have wanted. Arsenal have already overturned their first-leg deficit.

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Lyon finally have their first shot on target and it's potentially dangerous.

Damaris Egurrola is unmarked at the back post and heads towards goal but Daphne van Domselaar manages to keep it out.

Jen Beattie
Former Arsenal defender on TNT Sports

Arsenal did so well to keep the ball alive.

Two touches and a strike. What a finish that is from Mariona Caldentey. She nails it.

It's been the dream 45 minutes.

The fourth official's board is held in the air and it says there is going to be at least three added minutes at the end of the first half.

Ada Hegerberg hasn't had a touch in Arsenal's box yet. She's been marked to perfection.

Wendie Renard pings a wonderful cross-field pass towards Ellie Carpenter on the right, but her touch is too heavy and two Arsenal players close her down to win the ball back.

That sort of move sums up Lyon's half so far.

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Arsenal are having to do more defending now. Lyon are starting to find their rhythm.

Lindsay Heaps has the ball in the Arsenal half as they try to move up the pitch in numbers, but she dawdles on the ball and doesn't release it in time to cause much of a problem.

Ada Hegerberg holds her arms in the air in frustration.

That's eight shots so far for Lyon now without hitting the target. Daphne van Domselaar hasn't had much work to do.

Kadidiatou Diani goes up the right and sends a delivery into the middle, but Emily Fox heads it clear - initially, at least.

Diani is eventually able to have a go herself as Lyon work the ball back into box, but her effort is also blocked.

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This is a slightly better spell from Lyon. They earn another corner as Alessia Russo puts the ball out.

Selma Bacha swings it in, it's cleared by Arsenal but Ellie Carpenter has a first-time effort from range.

She doesn't hit the target.

Jen Beattie
Former Arsenal defender on TNT Sports

Lyon are giving Arsenal so much time and space on the ball and Joe Montemurro is getting frustrated, and I've never really seen him frustrated.

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Nearly....

Selma Bacha goes for goal with the free kick. It looks like it's going over the bar and it does in the end, skimming the top of the net, but it was dipping.

Lyon win a free-kick on the edge of the Arsenal area, but the visitors' players aren't happy.

Kadidiatou Diani goes down. It's a heavy touch from the Lyon player but Frida Maanum is then late in her challenge.

Seems fair to me.

Jess Anderson
BBC Sport at Groupama Stadium

The experience of Mariona Caldentey in this side can not be overstated.

It's her dishing out the instructions, pointing to where the ball should be going and generally dictating from the middle of the park.

The Spaniard levelled things up from the spot last week and has put some nice balls in dangerous areas today too.

Could she be the key?

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Mariona Caldentey has a crack from distance as she looks to bend it into the top corner from range when Arsenal win the ball from Lyon high up the pitch.

Lyon have given the ball away far too often.

Jess Anderson
BBC Sport at Groupama Stadium

Exasperated is the word I would use to describe Joe Montemurro's quick impromptu team-talk there, delivered while Daphne van Domselaar received some treatment.

Lots of waving arms and head shaking.

He raises his arms in frustration again as play gets back under way and his side immediately give the ball away.

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Argh. It's a good cross from Katie McCabe as Arsenal once again look to create a chance from out wide, but nobody is there to meet it in the Lyon box.

Daphne van Domselaar is back to her feet, so it's time for play to continue.

Over half an hour gone and it's Arsenal who've been the better side so far.

Faint appeals for a penalty from Lyon as Vanessa Gilles goes down in a tussle with Emily Fox in the box.

Daphne van Domselaar is now receiving treatment. Both teams use it as a chance to take on some instruction.