I'm glad that we got Marchionni, he is a way to better then Olivera, on other way maybe Olivera isn't such a bad player but he needs more playing time. I think the bes solution is to loan him to some Serie A club, and see will he develop into a good player.
About Zanetti I'm not really sure, I've red that he played excellent match against Milan, but one match doesn't mean anything, and Blasi played well for Parma and is much more younger than Zanetti. But I still see that deal pretty good, especially if we use Blasi as a bait for some other player.
Antonioli is good job, it would be stupid to take Abbiati for the bench, and lets face the truth that Abbiati also want first team football and Juve is the last place where he gonna get it.
And also I agree that we should convert Chiellini into a CB, and leave to Balza left position or right whatever. We really need good RB especially when Zebina is leaving, and good young central defender. Not to mention that our midfield needs improvement which i can't see in Zanetti. Like everyone said Mancini would be best option!!! We all know that Mancin can play as RM and in his last match against palermo he played as a CM and scored 2 goals!!!