Btw, its wishful thinking to underestimate Milan with stuff like they arent strenghtening their defence or midfield, for this season so far, they havent needed to, they lead the league by fielding a solid midfield and their defence doing well enough. They wont play 3 forwards much except weakest opponents. IMO this is just strengtening an already strong enough attack.
Cassano will bench Robinho mostly and it will be bussiness as usual. The trouble will be seeing what happens when its the reverse, Robinho/Pato benching Cassano.
Plus, the question is, has Allegri asked for Cassano? (he likes athletic/mobile players, Cassano is the opposite of that).