Building a club to return to glory like the Ferguson era is not an easy thing to do, we have seen several top coaches take turns leading The Red Devils squad, but none have lasted long and come close to Ferguson achievements. The setbacks of United and Chelsea should be put to good use by teams like Arsenal and Tottenham this season, because these two clubs have not won an EPL trophy in the last two decades.
Ferguson's impact in Manchester united can never be comparable as he has left a very big record that might be very difficult for any coach to break in Manchester united. Manchester united pattern of football eventually changed after Ferguson's exit from Manchester united. They've been struggling from one coach to another but none has been able to break the dead luck that has besieged the club for some years now. I think Manchester united needs a coach that can have almost same coaching experience Ferguson had during his coaching career for the club.
United's management needs to do something very fast to aid Manchester united performance as the club might really be paving their way to relegation and it will be very sad that a reputable club that has recorded lots of success in England will peradventure drop to relegation due to poor performance.