The release clause may be true, it might not be. Who gives a toss?
The guy is among the hottest properties in world football. He was available for relative peanuts and he is coming to Manchester City. He will never be available for cheaper than what he was now, and this idea that the likes of Real/Barca/Bayern/whoever the frig you want, would rather pay £150m in 2 years time than get him for £50m now is absolute horseshit. If they could have gotten him now, they would, but again, he wants to come to us.
I would rather pay £50m now and get 2 or 3 incredible years out of him, than do what United did and say no to release clause (if it even exists) and him go somewhere else. If in 2 or 3 years he fancies a change of scenery, he will get his wish, because we don’t hold players at the club who don’t want to be here. That is why it matters not if there is a release clause because the outcome will be the same either way.