#2 Poor transfer window signings
The only player that Manchester United signed during the summer transfer window was Fred from Shakhtar Donetsk. After finishing second in the last season, many believed that United will spend heavily in the transfer window just like their bitter rivals Manchester City.
Mourinho has signed many world class players like Pogba, Sanchez, Lukaku at a higher price and they have also failed to perform as per their potential. Victor Lindelof and Eric Bailey were another overpriced players who are not able to make a mark on the field. Players like Henrikh Mkhitaryan left because they couldn't fit into Mourinho's playing style.
Alexis Sanchez was swapped with Mkhitaryan in a deal which was a total failure as Sanchez is still searching for his form with the Red Devils.
Zlatan Ibrahimovic was the only signing that brought some dominance and positive results along with him to the Old Trafford.