Buffon
Licht - Barz - Chiellini - De Ceglie
Pazienza - Pirlo - Marchisio
Elia - Matri - Del Piero
I highly doubt Conte is going to risk putting Sorensen and Marrone on the field, he'll definitely put more experienced players in. As for Quagliarella, I don't think Conte prefers him out wide but rather an alternative to Matri so that's why I hope Elia and Del Piero start.
However, probably the most likely formation:
Buffon
Licht - Barz - Chiellini - De Ceglie
Pirlo
Pepe - Pazienza - Marchisio - Esti
Matri