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LONDON, ENGLAND - OCTOBER 4: Theo Walcott of Arsenal breaks past Chris Smalling of Man United during the Barclays Premier League match between Arsenal and Manchester United at Emirates Stadium on October 4, 2015 in London, England. (Photo by Stuart MacFarlane/Arsenal FC via Getty Images)

LONDON, ENGLAND - OCTOBER 4: Theo Walcott of Arsenal breaks past Chris Smalling of Man United during the Barclays Premier League match between Arsenal and Manchester United at Emirates Stadium on October 4, 2015 in London, England. (Photo by Stuart MacFarlane/Arsenal FC via Getty Images)