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SHEFFIELD, ENGLAND - OCTOBER 27: Arsenal physio Colin Lewin runs on to treat the injured Theo Walcott during the Capital One Cup Fourth Round match between Sheffield Wednesday and Arsenal at Hillsborough Stadium on October 27, 2015 in Sheffield, England. (Photo by Stuart MacFarlane/Arsenal FC via Getty Images)

SHEFFIELD, ENGLAND - OCTOBER 27: Arsenal physio Colin Lewin runs on to treat the injured Theo Walcott during the Capital One Cup Fourth Round match between Sheffield Wednesday and Arsenal at Hillsborough Stadium on October 27, 2015 in Sheffield, England. (Photo by Stuart MacFarlane/Arsenal FC via Getty Images)