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LONDON, ENGLAND - SEPTEMBER 24: Theo Walcott celebrates scoring Arsenal's 2nd goal with Alexis Sanchez and Nacho Monreal during the Premier League match between Arsenal and Chelsea at Emirates Stadium on September 24, 2016 in London, England. (Photo by David Price/Arsenal FC via Getty Images)

LONDON, ENGLAND - SEPTEMBER 24:  Theo Walcott celebrates scoring Arsenal's 2nd goal with Alexis Sanchez and Nacho Monreal during the Premier League match between Arsenal and Chelsea at Emirates Stadium on September 24, 2016 in London, England.  (Photo by David Price/Arsenal FC via Getty Images)