Chelsea will have to overcome Benfica if they are to set up a possible Champions League semi-final with Barcelona and a chance to erase one of the most painful moments in the club's history.

Benfica, who drew home and away with Manchester United earlier this season as they topped their group, will be no pushovers but the enticing prospect of a Barcelona semi-final is hovering in the background.

Roberto Di Matteo, the club's caretaker manager, said: "When you get down to the last eight teams, every draw is very difficult. I've seen Benfica many times. They were in Man United's group and they are a tough opponent for us. I think the fact that we play the first game away from home is good, a little bit like the Napoli game."

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#Roberto Di Matteo