Saviola could replace Palladino in the team, but as we know Palladino is only back up to wingers right now. This is also a position where Saviola wouldnt perform well. So Saviola would only replace Palladino as a squad player, rather than a direct swap in terms of what Palladino is used for.
So why do we need Saviola? He isnt a good choice of back up for Trezeguet as they differ in style of play. With Iaquinta and Del Piero there as well, this doesnt make much sense. Saviola is not a playmaker who can be used in a position further behind the forwards either.
For me it's a no brainer. Save the money, bring back Giovinco who can play as the playmaker or replace del piero when need be. Giovinco is more versitile overall.
Use Palladino as trade bait as it seems he wont get his chances in his true role.
The problem Juve has right now is that Trezeguet, although he is a great goal scorer, is a static player player....he scores and does nothing else...when he doesnt score he does nothing and the team players with 10 men on the field. It's a harsh criticism as he scores more often than he doesnt but still, it is hard for the club to find a good back up player for him, as anyone with his characteristics are more often first choice players at their respective clubs and wouldn't want to join Juve and sit on the bench.
If players like Saviola are going to be looked at, and other names such as Benzema, then the team will have to play different football, and that style most likely wont suit Trezeguet upfront.
Not sure if anyone else sees the situation as such such.