Thinking about this deal, it will be a huge success for Galliani if he gets Tevez with Inter too after him.
Assuming that Inter really made that 25m eur offer yesterday, and I think they did, then Tevez has a choice to pick Inter where he will not only be a sure starter and star of the team, but he will feel at home like nowhere in Europe, with all those argies (Samuel, Millito, Zanetti, Cambiasso, Alvarez...maybe Zarate).
Milan on the other hand are not showing complete trust in him, insisting on option to buy, not a mandatory buy. Then there is the competition in Milan's attack and the insecurity of regular playing time.
The wages he'll get in both teams will more or less be the same.
Yet, if Tevez still chooses Milan, and he most probably will, it will be against logic and will show how much better Galliani is than Branca, or whoever does Galliani's job in Inter.