Barcelona fullback Daniel Alves says Chelsea were frightened of them in their controversial 2009 Champions League semifinal defeat.
The two teams meet again on Wednesday night and Alves upped the stakes with a swipe at Chelsea's mentality.
Alves told the Independent: "There is no doubt that was the hardest game we've played, but a team with a man advantage playing at home and winning should have attacked us more.
"People say Chelsea should have won but for the referee, but that is not our problem. We were there to play football, to compete and try to get to the final. Chelsea did not reach the final because of fear."