Jose Mourinho has said Chelsea's difficult start to the season is "the worst period in my career with the worst results in my career."

Chelsea are currently 14th in the table with two wins from their opening seven matches and lost 2-1 this week in the Champions League.

"It [the situation] is something that is helping me to be better. It is a great negative experience.

"I've had big challenges. I am not saying it's a hard challenge, I'm saying it's the worst period. I have never lost so many matches."