Arsenal's English midfielder Theo Walcott (L) celebrates with Arsenal's German defender Shkodran Mustafi (2nd L) Arsenal's Chilean striker Alexis Sanchez (2nd R) and Arsenal's Swiss midfielder Granit Xhaka (R) after scoring their second goal during the English Premier League football match between Arsenal and Swansea City at the Emirates Stadium in London on October 15, 2016. Arsenal won the game 3-2. / AFP / Justin TALLIS / RESTRICTED TO EDITORIAL USE. No use with unauthorized audio, video, data, fixture lists, club/league logos or 'live' services. Online in-match use limited to 75 images, no video emulation. No use in betting, games or single club/league/player publications. / (Photo credit should read JUSTIN TALLIS/AFP/Getty Images)

Arsenal's English midfielder Theo Walcott (L) celebrates with Arsenal's German defender Shkodran Mustafi (2nd L) Arsenal's Chilean striker Alexis Sanchez (2nd R) and Arsenal's Swiss midfielder Granit Xhaka (R) after scoring their second goal during the English Premier League football match between Arsenal and Swansea City at the Emirates Stadium in London on October 15, 2016. 
Arsenal won the game 3-2. / AFP / Justin TALLIS / RESTRICTED TO EDITORIAL USE. No use with unauthorized audio, video, data, fixture lists, club/league logos or 'live' services. Online in-match use limited to 75 images, no video emulation. No use in betting, games or single club/league/player publications.  /         (Photo credit should read JUSTIN TALLIS/AFP/Getty Images)