The former Argentina international believes the Red Devils have struggled to find the right man to replace Sir Alex Ferguson
Juan Sebastian Veron has claimed Manchester United have struggled to move forward ever since Sir Alex Ferguson left the club, highlighting Manchester City's progress in that time.
Mourinho's men have made an inconsistent start to the 2018-19 season and are down in eighth place in the Premier League table, 12 points behind City following the 3-1 derby defeat at the Etihad Stadium.
A surprise 2-1 win over Juventus has put them in a strong position in Champions League group H, however, where victories over Young Boys and Valencia would see them qualify for the last 16 of the competition.