He had a great game against Chamakh, that was a real duel there, he's doing rather well as a centerback i don't think they're ever going to revert him back to his original position.
But to be honest, i am not convinced that he is good enough for a high level team ala Juventus. He is currently an upgrade over Legro no doubt, but that isn't saying much, is it?
Personally i rate Monaco's Nkoulou higher(you might have seen him play for Cameroon in the ANC), i think that guy definitely has the potential to move to a bigger stage some time during his career. He's such a stylish defender, and he is like M'Bia, he can operate just as well in a DM position. What i like most about Nkoulou is his technique, he is so calm and composed on the ball, and he has good passing ability for a defender.