If him coming takes us further in CL, and makes us more attractive to bigger players (possibly Gotze/Neymar etc), then give him the money. Drogba is a quality player, and I think he'd make a huge hit with us.
Plus the 'issue' of him not speaking Italian is irrelevant, particularly since he speaks French and English, which means he can communicate with most, if not all, of our team.
Pay peanuts, get monkeys, pay a fortune, get quality