My formation:
Buffon
Zebina Cannavaro Chiellini LB
Camoranesi Melo Marchisio Giovinco
Trezeguet Del Piero
LB = To be filled with either grosso or DC depending on who is sucking less during training.
If Candreva is fit and Camo's head is not straight he can start ahead. Sissoko can play instead of Melo, but I wouldn't prefer him playing instead of Marchisio because our passing quality will drop alot.