Chelsea midfielder John Obi Mikel revealed how Blues boss Carlo Ancelotti went 'mad' after the team drew 2-2 with APOEL Nicosia in the Champions League on Tuesday night.

Chelsea were leading two-nil before conceding twice to be held to a draw and Mikel, although admitting he made a mistake to concede the second goal, said the manager wasn't very happy with their performance.

"It was a very big mistake from me, but the mistake is done now. I take responsibility for it. Overall we didn't play well enough in the second half and the manager was really, really mad with the way we played. We had lost the last two games and playing at home as well, we should have won this game," the Nigerian said.

The 22-year old also admitted that he could sense something in the game was going to change when Chelsea stopped moving the ball quickly.

"In the first half we played well but the second half we didn't move the ball quickly and you could smell the danger coming," he added.