The 26-year-old centre-half had earlier castigated Grant, saying: "Jose Mourinho is the reason I came to Chelsea and if I knew Avram Grant was going to be the coach then I would have signed for another club.
"The fact is while Jose was the coach I played most of the games and people who know me know that I would not have come here to be a reserve. I knew that nothing good would come with Grant as Chelsea coach."