Chelsea manager, Maurizio Sarri, has named the best team in Europe ahead of the Blues clash with City at the weekend.
Sarri described Pep Guardiola's men as the best in the continent and in the world as both side tackle each other on Sunday.
Chelsea are now 11 points behind Manchester City after their 2-1 loss to Wolves on Wednesday.
Addressing post match press conference, Sarri said, "As I said before City are the best in Europe, maybe in the world, they can win the Champions League, but it depends on moments.
"If you have to play against them for ten months they are the best in the world at the moment.
"After this match we lost confidence, but maybe it is better. Sometimes my players show me they have too much confidence.
"As I said before, City are in another category. They are not in our category.
"We have to play and to fight to be in the top four I think. The result is very difficult for this. In every match you have to gain points.
"I lost Serie A with 91 points, so I know every match you have to gain points."