Nope. City would never sell to us anyway. If Aguero leaves them in his prime, it'll be to Real Madrid or Barcelona. Can't see either of those scenarios for various reasons.
Can't see Milan finishing in the top 3 this season, and they're already a selling club so some of their good players might be available (Balotelli/Montolivo/El Shaarawy). Milan have said the former two are 'unsellable', however a good offer might tempt them. A midfield pairing of Montolivo-Ramsey would be immense.