Really hope he stays.
I'd be very surprised if Man City 'flipped' him. That will be a more expensive job than some previous posts assume, because you would need to factor in the 'loyalty bonus' (unless he submitted a transfer request).
If it were Spurs I'm sure they would threaten to, to try and get us to cough up a few quid to cancel the clause. But it's not as if Man City need the money...