With Nedved, Sissoko, Camo, Zanetti and probably Marchioni all injured, Ranieri doesn't have any alternatives, does he? . I would give Marchisio a rest, at the moment he's definitely Juve's best midfielder and he took part in midweek games for the cup and the CL as well as in last week game with Torino (if I'm not mistaken). So my midfield line would look like this:
Hasan--Tiago--Poulsen--Giovinco
I don't know what is the condition of Legrotaglie and Grygera, I heard that the latter one picked an injury vs Chelsea, as for the former I haven't heard anything and I doubt whether he's fully fit. Zebina needs more playing time, so my defence would look like this:
Zebina--Mellberg--Chiellini--Molinaro
If Zebina is not fit yet, I'll give Ariaudo a central defender role and move Olaf to the right back position.
Ranieri will find it hard to pick 2 out of his 4 strikers, Iaquinta played very well in Chelsea game, Trez lacks match fitness, Del Piero and Amauri are on the line, so it's up to Ranieri.