Chelsea will face Atletico Madrid in the semi-finals of the Champions League.
The Blues are the last-remaining English side in the competition after beating Paris Saint-Germain on away goals on Tuesday.
Bayern Munich will play Real Madrid in the other tie.
The first legs will be played on April 22-23 and the second legs on April 29-30.
The final of the competition will be held at Benfica's Estadio Da Luz in Lisbon on May 24.
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At least two people have died after a knifeman brought terror to the heart of Westminster.
The Cobra committee brings together government ministers with senior officials of the emergency services and security agencies.