Chelsea could be in for a spectacular end to the season with Thomas Tuchel guiding them to an FA Cup final and the verge of the club's third Champions League final.
Real Madrid stand in their way, but Chelsea have the advantage thanks to a 1-1 draw in the Spanish capital in which they were the game's driving force and scored an away goal through Christian Pulisic.
Zinedine Zidane's side have a canny knack of saving their best for the Champions League knockout rounds, winning the competition three times in succession between 2016 and 2018.
When is it?
The second leg at Stamford Bridge is on Wednesday May 5.
What time is kick-off?
The game gets under way at 8pm.
What TV channel is it on?
BT Sport 1 have exclusive live Champions League coverage in the UK. Alternatively, you can bookmark this page and return on the night to follow the action with Jake Goodwill on our live blog.
What is the team news?
Tuchel is waiting to find out if midfielder Mateo Kovacic and central defender Antonio Rudiger are fit to play. Kovacic is struggling with a thigh problem while Rudiger was injured late on in the first leg in Madrid. Jorginho, Christian Pulisic and N'Golo Kante were rested for the weekend league win over Fulham and could come back in.
Madrid could be handed the boost of a Sergio Ramos return, who is expected to be back at the heart of their defence after a calf problem. Federico Valverde is back again after a testing positive for Covid-19, but Dani Carvajal and Ferland Mendy are expected to miss out. Raphael Varane is a slight doubt having been forced off the field against Osasuna on Saturday due to discomfort in his right leg. Left-back Marcelo is clear to play having initially be called at random by the Madrid authorities to supervise an election vote count.
What are Telegraph writers saying?
If the European championships were starting this weekend, on the basis of form Mount and Foden would deservedly be in the starting line-up with Harry Kane. Mount and Foden’s footballing style is more continental than ‘English’ - or certainly how ‘English’ has come to be defined during those tournaments when we kept chasing the ball against superior opponents who passed us off the park.
Unlike two of Chelsea's most recent big-money striker flops, Fernando Torres and Alvaro Morata, Werner’s approach is to front up to his problems. You do not see him avoiding the six-yard box or television microphones as the two Spaniards used to.
What are the odds?
Real Madrid 5/2
Real Madrid 5/4
What is our prediction?
We fancy Chelsea to reach the Champions League final after winning a nail-biter at Stamford Bridge in extra time.