Defender David Luiz says he is ready to play anywhere on the pitch in order to help Chelsea.
The Brazil international was a surprise signing for the Blues during the summer transfer window and could make his debut in his second spell with the club this Sunday away at Swansea City.
Chelsea are yet to drop any points in the English Premier League and are strong favourites to take all three points from the Liberty Stadium.
"It was my decision, yes [to return to Stamford Bridge]," he told Chelsea's official website.
"I really wanted to come back because I spent an amazing time here. I loved to be here and that is why I want to come back.
"I want to help and when I am in the team I am there to try to help.
"The coach is an amazing coach, he understands a lot of tactical things and I know he chooses every match the best line up, so if he needs to play three, four or two, it doesn't matter, I am there if he wants me to play. In different positions I am available.
"Against Swansea it will not be easy, I played in draws there before, so it is always a tough game. Then in the league after Liverpool it is a London derby. They will be tough games."