Sir Alex speaks candidly to the club's official TV channel in a 10-minute interview taking in some of the toughest decisions he had to make during his 26 years in charge at Old Trafford before retiring from management at the end of the 2012/13 campaign.
Among the main points on the agenda to promote his new book were his relationships with his players, such as Cristiano Ronaldo, Roy Keane, David Beckham and Ruud van Nistelrooy.
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