Do you guys know that 39 different players played for Juve this year in the official serie A, EL and Coppa matches? That's almost 40 different players. Almost two full squads.
7( or 8 if we count Sorensen) are from primavera, but the other 32(31) players were senior players.
As things stand right now we have 26 senior players (counting Sorensen too) in the squad
GK: Buffon, Storari, Manninger
DR: Motta, Sorensen, Salihamidzic, Grygera
DL: Grosso, De Ceglie, Traore
DC: Barzagli, Chiellini, Bonucci, Rinaudo
MC: Aquilani, Melo, Sissoko, Marchisio
MR: Krasic, Pepe
ML: Martinez
SC: Quagliarella, Iaquinta, Toni, Matri, Del Piero
Amauri, Lanzafame, Tiago, Pasquato, Marrone, Immobile are still owned by Juve and will return to us in the summer
Giovinco, Palladino, Ekdal, Almiron and Ariaudo are half owned by us and another club.
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Salihamidizic will leave in the summer, but that still leaves us with 25 senior players from the current squad+Amauri, Lanzafame, Tiago.
Ideally the team should have 22 senior players (two for every position) and the rest could be from primavera. In the summer we will have 6 senior players more than needed, so no matter how many new players we buy, we should sell that same number of players+6.
If we take a risk, then instead of 22 senior players we'll go with 20 senior players so in that case we can buy 2-3 good/great players and get rid of ~10 senior players.