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LONDON, ENGLAND - JANUARY 03: Referee Kevin Friend shows Damien Delaney of Crystal Palace a yellow card during the Barclays Premier League match between Crystal Palace and Chelsea at Selhurst Park on January 3, 2016 in London, England. (Photo by Paul Gilham/Getty Images)

LONDON, ENGLAND - JANUARY 03:  Referee Kevin Friend shows Damien Delaney of Crystal Palace a yellow card during the Barclays Premier League match between Crystal Palace and Chelsea at Selhurst Park on January 3, 2016 in London, England.  (Photo by Paul Gilham/Getty Images)