4312 is my guess.
Buffon
X Canna Chiellini Molinaro/DC
Camo Momo Marchisio
Diego
Amauri Del Piero
As someone1 already mentioned, we have too much quality upfront to only play with 1 striker, and with the above formation we have 2 players for every position.
All we need is a quality rb. Some1 good enough to pick up the slack when Camo is injured and were stuck with Brazzo/Marchionni.
Whether the above team is more competitive, we will have to wait and see. I have my concerns, mainly Cannavaro. He was a disaster in Spain this season. A shadow of the player he was. Hopefully Gigi and Canna can help organize the defence, otherwise it doesn't matter how strong we are elsewhere.