Chelsea will travel to Manchester under immense pressure to progress to the semi-finals. United, on the other hand, are favorites to progress now, having won the first leg at Stamford Bridge 0-1. Will this be Carlo Ancelotti's best match as a Chelsea manager in Europe or his last?

Chelsea and Manchester United were involved in yet another gruelling encounter, THT looks back at the duel with the moments and the decisions that turned the tie.