Manchester United's five failures in Europe under Sir Alex Ferguson Following Manchester United's Champions League exit, Sportsmail looks at five examples of when the Red Devils choked in Europe's elite competition under Sir Alex Ferguson.

Alex Ferguson at Disrupt London

Read Sir Alex Ferguson's crestfallen letter to Eric Cantona when he retired Sir Alex Ferguson pulled off one of the greatest bits of transfer business in Premier League history when he signed Eric Cantona from Leeds on November 26, 1992.

How Sir Alex Ferguson turned Manchester United into the biggest club in the world Ahead of Sir Alex Ferguson's return to the Old Trafford dugout, Sportsmail's Mike Keegan examines Ferguson's legacy and explains why we will never see the Scotsman's likes again.

Cristiano Ronaldo 'reduced to tears' by Sir Alex Ferguson at United Cristiano Ronaldo broke down crying in the Manchester United dressing room after struggling to cope with Sir Alex Ferguson's harsh treatment, a new biography has revealed.

REVEALED: Sir Alex Ferguson's Manchester derby FURY Rio Ferdinand admits watching Ruud van Nistelrooy receive the hairdyer treatment from Sir Alex Ferguson helped him realise how fierce the rivalry was between United and City.

Ferguson: Benitez killed himself with his 'facts' rant at Liverpool Sir Alex Ferguson has opened up about Rafa Benitez's infamous 'facts' rant, claiming the then Liverpool boss made his life easier by attacking him in a pre-match press conference.

David Beckham hails Sir Alex Ferguson as 'the greatest' Former Manchester United midfielder David Beckham has described his one-time Old Trafford boss Sir Alex Ferguson as the 'greatest' ever manager.

Mourinho's use of the dark arts is turning him into the new Sir Alex Ferguson MIKE KEEGAN: Making furious accusations of a campaign against his team, mastering mind games and ramping up pressure on referees – is Jose Mourinho the new Sir Alex Ferguson?

Sir Alex Ferguson earns £100,000-a-day as a Man United 'global ambassador' Sir Alex Ferguson earned a staggering £2,165,000 from Manchester United between October 2013 and June last year in his role as £100,000-a-day ‘global ambassador’ for the club.