|Tweet Hernan Crespo!
|Send your questions to legendary Argentina striker Hernan Crespo via @Heineken using #sharethesofa on Tuesday evening|
The Blues need to stage a mighty comeback if they are to overturn a 3-1 defeat from the first leg, whilst the Frenchmen must do without Zlatan Ibrahimovic if they are to progress.
As the action unfolds at Stamford Bridge, Crespo will be tweeting for @Heineken in conjunction with Goal and you can send your questions into the 38-year-old goalscoring great.
To get involved, send your tweets to @Heineken and use the #ShareTheSofa hashtag to interact with the man who scored twice in the 2005 Champions League final.
Coverage starts at 19:30BST on Tuesday 8 April and will run until the final whistle.