Check out Pazzo's goals this season:
Look how many goals he scores out of nowhere, being first on the ball and running in the right paths. Look at his heading skills, his control during his finishes etc.
If we are going to play 4-4-2 or 4-4-1-1 with direct and wide play, with some like Krasic, Robinho, Cassano, Sanchez, Vargas on the wings, then Pazzo would be a perfect striker.
Imagine this:
Pazzini - Amauri/Iaquinta
Vargas - Sissoko - Marchisio - Krasic
That would be deadly. We should keep one of Gio/Diego then, and use him and Del Piero to be an alternative to the attack, adding one creative and skilled dribbler to the frontline, in needed situations.
We should try to get some money from Trez or trade for something promising. Sell Poulsen/Melo and Tiago.