also should note squad can only be 25 players excluding U21. Full 25 player squad must include 4 club trained players... Marchisio, Rugani, Audero and Marrone probably imo.
hypothetical:
GK (3): Buffon, Neto, Audero (Yth)
FB (4): Dani Alves, Alex Sandro, Lichtsteiner, Evra
CB (6): Chiellini, Barzagli, Bonucci, Benatia, Rugani (Yth), Marrone (Yth)
CM (7): Marchisio (Yth), Pjanic, Khedira, Matic, Asamoah, Lemina, Sturaro
FW (4+1): Dybala, Higuain, Manzdukic, Pjaca, Gabigol (U21)
24 players + 1 U21 so room for one more as well