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LONDON, ENGLAND - SEPTEMBER 24: (L-R) Shkodran Mustafi and Laurent Koscielny of Arsenal during the Premier League match between Arsenal and Chelsea at Emirates Stadium on September 24, 2016 in London, England. (Photo by Stuart MacFarlane/Arsenal FC via Getty Images)

LONDON, ENGLAND - SEPTEMBER 24:  (L-R) Shkodran Mustafi and Laurent Koscielny of Arsenal during the Premier League match between Arsenal and Chelsea at Emirates Stadium on September 24, 2016 in London, England.  (Photo by Stuart MacFarlane/Arsenal FC via Getty Images)