The Cameroon favourite said: "I feel good about going back. I am fit and I return with an excellent team. We have already proved we can play against the best and that is what we must continue to do against Arsenal.
"It was a disappointment to me when I had to leave the club after six-and-a- half years. It was a long time, it was a special time. But in football, that's life. You move on, you have new horizons.
"What I know is Arsenal have exceptional young players. They'll miss Thierry and in the big matches they will certainly miss the winning quality he offers."