Getting Kolarov and Zuniga is enough for me. I'd call it a very good mercato. They can be very good as wing backs.
IMO Zuniga as a WRB is better than Litch. We'd be improving the 4 positions we really needed.
Also keeping Marrone, playing him MUCH more often as Pirlo's role, for 2 strong reasons: Marrone must play more and Pirlo must play less. Shouldn't allow him to leave.
1st team (352): Buffon; Chiellini, Bonucci, Barzagli; Kolarov, Marchisio, Pirlo, Vidal, Zuniga; Tevez, Llorente.
2nd team (433): Storari; Peluso, Ogbonna, Caceres, Litch; Marrone, Asamoah, Pogba; Vucinic, Giovinco, Matri.
residual players: Padoin, De Ceglie, Pepe.
This 2nd unit could very well play 15 games in Serie A and keep up with the level. Very solid team, with Litch, Ogbonna, Asamoah, Pogba, Marrone, Vucinic...
in: Llorente (free), Tevez (12M), Peluso (4M), Asamoah (8M), Kolarov (2M + 6M), Zuniga (6M), Berardi (6M + players), Zaza (1.5M) = 40M spent
out: Giac (10M), Quags (8M), Isla (7M), Melo (4M), Ziegler (1.5M), Masi (2M) = 32M received
Great mercato spending 8M overall. I hope this falls through.