Manchester United legend Wayne Rooney insisted the club has struggled ever since 'a void was left' by the departure of boss Sir Alex Ferguson
The Red Devils went from a Premier League powerhouse right up until Ferguson's retirement at the end of the 2012/13 season to a team struggling to reach the top four ever since.
They have the odd moments of success along the way, but a long string of managers have failed to live up to the Scotsman, including big names such as Jose Mourinho and Louis Van Gaal.