Given his age, only a year on his contract and previous injury record £25M might seem a lot. But there is no doubting he is a brilliant player and to be fair his talent is probably worth that price in todays Market. It might seem like a gamble but if it pays off and scores you 20 to 30 goals a season for the nest 4 years then it's well worth it and he is definately capable of that.
I still have a feeling though that he will come to City. I've had that feeling all summer. But i'm well aware it could be proven wrong and i would certainly preffer him to move to you guys than united.