Gagliardini and Parolo only started because 5 other midfielders got injured. Its normal in an injury crisis that the 7th choice CM doesn't justify starts.
If injuries allow it we will have a very good team for Russia. The problem will be if Ventura is good enough for them.
GK: Buffon, Donnarumma, Perin
CB: Chiellini, Bonucci, Barzagli, Rugani, Romagnoli
FB: Darmian, Spinazzola, Zappacosta, De Sciglio
CM: Marchisio, De Rossi, Verratti, Pellegrini, Parolo
FW: Insigne, Florenzi, El Shaarawy, Candreva, Bernardeschi
ST: Belotti, Immobile, Balotelli
If Ventura can't make a great team from those players (if fit) then its all on him. Conte did it with Pelle, Eder, Giaccherini, Parolo, etc. I would like to test a 4-3-3, but his 3-4-3 can actually look very good.
Insigne/El Shaarawy - Belotti/Immobile - Candreva/Bernardeschi
Spinazzola/Darmian - De Rossi/Marchisio - Verratti/Pellegrini - Florenzi/Zappacosta
Chiellini/Romagnoli - Bonucci - Rugani/Barzagli
Buffon/Donnarumma