#3 Negligible player development
There is an unexplained pleasure in watching young talents improve with each passing season and turn into fabulous players. Manchester United have been doing this for years now; their youth set-up and tendency of promoting young talents to the first team is famous all around the world.
Yet, quite a few clubs have overtaken United in talent nurturing and promotion in recent years. Jose Mourinho's appointment meant that United was always going to lose out on that field, but it is also the deterioration of the experienced lot that is alarming.
Marcus Rashford is the prime example of a young player with fabulous promise, who has failed to reach the world-class heights that were expected of him. Instead, Rashford has gone backwards in many ways and is currently a shadow of the player he once was. He is not the only one.
Martial might have been rejuvenated for the past few weeks, but it is a delayed reaction and might even be temporary. Players like Pogba, Lindelof, Shaw, Lukaku have all failed to improve because the manager refuses to play to their strengths. United under Jose Mourinho is no longer a dream destination for the best players in the world, because of the Portuguese's tendency to burden even the best attackers with defensive duties. Unless Mourinho leaves now, Manchester United will not be able to lure the best talents of the world into their set up in the future.