Michael Ballack returns to Stamford Bridge for the first time since leaving the club last summer, while Arsene Wenger's ban continues away to the Bundesliga champions
Our LIVE! service brings you team news, fan views, goal flashes, red cards and match reaction - all in one place.
We can bring the action to life on your computer - from how Arsenal's new signings fare away to Borussia Dortmund, to whether Michael Ballack can cause an upset on his return to Stamford Bridge.
Click on the link below and you can follow all the matches this evening:
As well as bringing you updates on Arsenal's trip to Dortmund and Chelsea's match against Bayer Leverkusen, we will keep you up to date with the other six matches taking place in the Champions League, including Barcelona's clash with AC Milan.
With reaction coming in from around Europe, Goal.com will bring you the best of what the managers and star players have to say on the games within moments of the final whistle.
No matter who you support, you'll get all the news and views you need right here throughout the evening.