"I do not care about the rumours, I am calm," Essien was quoted as saying by PFA website GiveMeFootball. "Nobody from Chelsea has told me anything and I have a contract with them." Essien believes that the Blues' squad's unity has been a major part of their success, suggesting that he hopes Roman Abramovich keeps the core stars that have been together at the club for the past few seasons. He added: "We have known each other a long time and we know what the other players are thinking - that's a great thing for us and it shows on the pitch. "Things come natural to us, we don't have to think about it. When one of us has the ball he knows exactly what his team-mates are going to be doing. "We defend together, we attack together - that's teamwork. It's good for us that we have kept the same players because we're used to each other now."