Should that have been a penalty?

Clara Mateo surges through Chelsea's midfield and is heading through on goal but trips ater a collision with Kadeisha Buchanan.

The referee waves away her appeals.

Emma Sanders
BBC Sport at Stamford Bridge

Image source, Getty Images

It took just over four minutes for the home crowd to sing their first rendition of "Emma Hayes".

She only has a couple of matches left at Stamford Bridge but they could add a couple more on if they reach the knockout stages...

Hayes has been stood on the edge of the dugout since kick-off just observing the start to the match.

It's not been the quickest of starts.

Both teams just building into it at the moment.

Niamh Charles darts down the left-hand side and tries to play a cross into the middle of the box but there's nobody there to meet it.

Not the nicest of starts for Chelsea. Gaetane Thiney clatters into Lauren James within the first 10 seconds.

Image source, Getty Images

Here we go! Paris FC get the ball rolling.

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The teams are out at Stamford Bridge.

Who'll come out on top today?

Hit the thumbs up for Chelsea, or the thumbs down for Paris FC.

Emma Sanders
BBC Sport at Stamford Bridge

Image source, BBC Sport

"Winning is our aim" are the words in Chelsea's song and on boards around Stamford Bridge.

That's what Chelsea want to do in the Women's Champions League this season in Emma Hayes' final season - deliver the only piece of silverware she has not yet won with the club.

After a controversial 2-2 draw in Madrid, Chelsea will want to get back to winning ways with their first home game of this season's competition.

They have kept five successive clean sheets at home in Europe, and have not lost.

Not many will expect that statistic to change after tonight against group-stage debutants Paris FC but Chelsea still need to deliver the goods.

Image source, Getty Images

There's a familiar face for Chelsea fans in the Paris FC squad today.

Defender Alsu Abdullina is on loan at the French side - but she's been allowed to take part in today's game.

She's on the bench for the Parisians.

The Russian full-back has two Women's Super League titles to her name, but played just 168 minutes across the 2021-22 and 2022-23 seasons.

Paris FC had quite the start to this season's Champions League.

The French side took part in the qualifying rounds and recorded unlikely victories over Arsenal and VfL Wolfsburg.

The Parisians have reached the group stage for the first time in the club's history.

Could they pick up another unexpected scalp at Stamford Bridge tonight?

Image source, EPA

Image source, EPA

Paris have had a positive start to domestic football this season and sit second in the French top flight, trailing leaders Lyon by just three points.

Their Champions League group stage action didn't begin they way they would have hoped, though, after a strong qualifying campaign.

They were on the receiving end of a 2-1 home defeat by Swedish side BK Hacken last week.

Paris dominated that game with 22 shots, but their only goal came from a penalty. Will they be more clinical tonight?

Chelsea

Image source, Getty Images

Chelsea know they can't afford to be complacent tonight.

Paris FC have made a habit of upsetting traditional Champions League heavyweights this season and have already knocked out Arsenal and Wolfsburg in the qualifying rounds.

Chelsea striker Sam Kerr highlighted the threats they possess.

"They are riding a wave at the moment - that can be dangerous," said Kerr.

"You saw with the results against Wolfsburg and Arsenal - to beat two really good teams over both legs - it shows they are an amazing team. You can't take any team lightly in the Champions League."

Emma Sanders
BBC Sport at Stamford Bridge

Image source, BBC Sport

There's a nice opportunity for Ashley Lawrence to get one over her former rivals.

The Chelsea defender, who moved to England in July following six years at Paris St-Germain, has enjoyed plenty of success against tonight's French opponents.

During her time at PSG, she won a league title and two French cups, as well as reaching the Women's Champions League final in 2017.

Paris FC will know all about her but Lawrence is currently buzzing around in the warm-up on the far side of the pitch and will hope to make an impression tonight.

Emma Hayes, who is doing some pre-match media duties, signed players like Lawrence to help them get over the line in this competition.

Tanya Oxtoby
Northern Ireland manager on BBC Radio 5 Sports Extra

There will be frustration for sure about the Real Madrid game last week, not getting maximum points, particularly given the standards that Chelsea set as a team.

But, the beauty of their schedule is that they have another game coming up, then another and another, so they have the chance to move past it quickly.

Tonight they will aim to get on the front foot early and stamp their authority on the game. Make sure that they dominate the ball and when those opportunities come in the final third they have to be ruthless.

Image source, Getty Images

Emma Hayes won't be forgetting Chelsea's last Champions League game in a hurry.

They were held to a 2-2 draw away to Real Madrid last time out, but that game wasn't without controversy.

Real were awarded a penalty, but replays showed that the foul took place outside of the box.

Niamh Charles found the net with what looked like a last-gasp winner, volleying to meet a deep cross.

However her goal was quickly ruled out for offside but replays showed Charles had timed her run perfectly.

There's no video assistant refereeing until the knockout stages of the Women's Champions League

• Chelsea held by Real Madrid in Champions League opener - read the report

Gilly Flaherty
Former Chelsea and England defender on BBC Radio 5 Live

Aggie Beever-Jones is on fire at the moment.

She went on loan to Everton last season and that seemed to have done her the world of good. She got minutes under her belt, was able to mature in the WSL and has come back a completely different player.

She's so confident at the moment, scored at the weekend here at Stamford Bridge versus Liverpool and she is a great asset to have off the bench for Chelsea.

Image source, Getty Images

Was Emma Hayes right to bench Aggie Beever-Jones tonight?

The 20-year-old has scored in four successive Women's Super League matches, including on her first start at Stamford Bridge on Saturday, and England manager Sarina Wiegman confirmed she is "in the conversation" for an international call-up.

"I agree with Sarina [Wiegman] and I think she has work to do still. For example, knowing when to go it alone in situations or when to link with others. But she's such a good learner," Chelsea manager Emma Hayes said before today's game.

"She is unbelievably efficient in front of goal. The chances she's got, she's taken really well. There's a competition with her and Sam Kerr on a daily basis. That's fun to see because they're driving standards for each other.

"It's another good moment for us to show how important the loan system has been for her. She is the first player to come through [Chelsea's] academy system. It's been a long time coming and hopefully she will be the first of many."

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BBC Radio 5 Live

You can listen to live coverage of tonight's UWCL match on BBC Radio 5 Live.

Build up with Eleanor Oldroyd begins is under way, with full match commentary from Vicki Sparks and former Chelsea defender Gilly Flaherty from 20:00 GMT.

To access both of these programmes just scroll to the top of this page.