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LONDON, ENGLAND - MAY 21: Referee Mark Clattenburg signals to Pape N'Diaye Souare of Crystal Palace during The Emirates FA Cup Final match between Manchester United and Crystal Palace at Wembley Stadium on May 21, 2016 in London, England. (Photo by Mike Hewitt/Getty Images)

LONDON, ENGLAND - MAY 21:  Referee Mark Clattenburg signals to Pape N'Diaye Souare of Crystal Palace during The Emirates FA Cup Final match between Manchester United and Crystal Palace at Wembley Stadium on May 21, 2016 in London, England.  (Photo by Mike Hewitt/Getty Images)