Far be it from me to defend Mourinho but it took de Bruyne quite some time to "get it". It was about halfway through a season with Wolfsburg when he suddenly realised he could pass the ball rather than just hog it and shoot all the time, since which time he has developed into one of the best five players in the world. Given the generally cretinous nature of football fans - without going all Full Monty, no one wants that - he simply wouldn't have been afforded the patience at a "big" club to work out his weaknesses, hence I can understand Mourinho's reluctance/lack of patience