Yeah.
Also, considering all the missings in Italy, the Bulgarians will try to take this chance and they'll go for the win.
Bulgaria has a very weak defense and ok midfield but the main power of this team is in the attack where Martin Petrov operates on the left side and Berbatov plays in the center.
In order to stop a strong and technical guy like Berbatov, Lippi knows that he'll need Chiellini, even if he's not at 100%.
Montenegro also has a tall and technical player up-front (Vucinic), but it's a home match against a weaker opponent so Lippi can take the risk and play someone else instead of Giorgio. But today he needs the best in defense.