Buffon
Licht - Barzagli - Chiellini - Ogbonna
Vidal - Pogba
Di Maria - Mata - Tevez
Llorente
Or switch Llorente with Bonaventura and use Tevez upfront. Anyway, Conte's concern defensively would be solved with Di Maria and Tevez who both are two of Europes hardest working players. Di Maria is like Pepe with creativity.
Basically our back bone and what is behind our success which is our defenders and CM's are still there and what you're getting by benching Marchisio and Vucinic you get back by Mata and Di Maria's creativity. Seems like a good swap to me.
Also seems like a good transition from the aging Pirlo.