"I am a Chelsea player and will be 100 per cent committed and supportive to my manager, my team-mates and the club," he said in a statement released by Chelsea.
Chelsea manager Avram Grant said on Friday he was keen to speak to the player in private to quell any further dressing-room unrest.
"I can't tell you something because I read it in the paper. I need to discuss it with him," Grant said.
"I have read many things that were not true about problems in the dressing-room.
"Now you know there was no problem in the dressing-room until now and I hope it will continue like that.
"This attitude has brought us good results in a very difficult time.
"I am very happy with the atmosphere and the attitude of the players until now and I am sure that it will continue."