Stand named for Sir AlexUnited unveiled a special tribute to the boss just before the Sunderland game.
Video: Surprise, Sir AlexWatch the footage as the manager sees the North Stand renamed in his honour.
Sir Alex: Team builderThe Reds boss has built several great sides in his time at Old Trafford.
Fans' tribute to Sir AlexSupporters at Old Trafford hail the boss and we invite you to do the same online.
05/11/2011Pics: Sir Alex's big day
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