"Sabatini and Corvino"
Face it sluts, he's the best at what he does in Italy.
I don't want his contract renewed, but that is because I have never liked him, and never will. Kinda the same vibe/feeling I have with the likes of Giac, Padoin,and to a lesser extent Peluso. That is the subjective reason.
As for the objective part, I simply feel he has reached his limits. He is good at assembling/building a squad a la Ranieri, but doesn't have that extra bit, the X-factor to bring it/take it to the next level as a DS. Remember, he has never worked at a big club before, and expectations @ Juventus are only going to get higher henceforth.
As for being the best in Italy, I'd say Galliani is still more shrewd and experienced than him. Moreover, we are dominating Italy, and it shouldn't be hard to do so given our resources compared to other clubs. The next step is to make an even stronger impression in Europe, a lasting impression, not just a fleeting presence, and for that, I feel we need someone else other than Marotta.