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STOKE ON TRENT, ENGLAND - APRIL 14: Manager Sir Alex Ferguson of Manchester United complains to the fourth official during the Barclays Premier League match between Stoke City and Manchester United at Britannia Stadium on April 14, 2013 in Stoke on Trent, England. (Photo by Matthew Peters/Manchester United via Getty Images)

STOKE ON TRENT, ENGLAND - APRIL 14:  Manager Sir Alex Ferguson of Manchester United complains to the fourth official during the Barclays Premier League match between Stoke City and Manchester United at Britannia Stadium on April 14, 2013 in Stoke on Trent, England.  (Photo by Matthew Peters/Manchester United via Getty Images)