Imagine a deal like this:
Sell Vidal for 40m.
Sell Llorente for 15m
Sell Isla for 8m
Sell Coman for 15m (plenty of clubs interested and I can't see Allegri using him)
Funds raised: 78m
Buy Goetze for 45m
Buy Sandro for 18m
Buy Cuadrado on loan (4m) - option to buy at a total of 22m on top. (if he ends up good it would be good).
Funds spent: 67m or 89m if we buy Cuadrado outright.
Squad of 25:
GK: Buffon, Neto, GK3
DEF: Lichsteiner, Caceres, Barzagli, Bonucci, Chiellini, Rugani, Evra, Sandro, Padoin
MID: Marchisio, Pogba, Khedira, Asamoah, Sturaro, Pereyra, Cuadrado, Goetze, Vadala`
FWD: Dybala, Morata, Mandzukic, Zaza
Don't need a 5th striker as Goetze can play up front if needed.
That squad would be able to play 4231, 433, 4312 and 352 (with Sandro and Cuadrado on the wings)
That would ease the Vidal pain.