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Published 12:23 4 Sept 2015 BST

In an extract of the book published on the Facebook page for the club, the Scot admits that his hard-line approach to disciplining some of his high-profile Manchester United stars could well have cost the club some Premier League titles.
The likes of Roy Keane, Jaap Stam, Ruud van Nistelrooy and, perhaps most famously, David Beckham all crossed Ferguson during his United tenure - with all of them departing the club soon after.
Reflecting on his time in the job and even drawing on his childhood memories, he makes it very clear that he valued discipline above everything else in his time as a manager.
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