I think Ranieri's formation will be this.
------------Del piero-------Trez----------------------
----Nedved---------------------------Camo----------
------------------Sissoko----Zanetti---------------------
----Molinaro----Cheillini---Mellberg----------Zebina---
-------------------------Buffon---------------------------
It is not dissimmilar to Capello's formation with Juve except Capello, despite playing a dreadfully boring and uncreative formation, had superb quality to outmuscle the opposition. Our defense is not even close to what it was 3 years ago, we don't have the solidity we had then and therefore we can't afford to play with the formation we played then.