Arsenal's German defender Per Mertesacker (R) challenges Sunderland's English-born Scottish striker Steven Fletcher during of the English Premier League football match between Arsenal and Sunderland at the Emirates Stadium in London on December 5, 2015. AFP PHOTO / IKIMAGES RESTRICTED TO EDITORIAL USE. No use with unauthorised audio, video, data, fixture lists, club/league logos or "live" services. Online in-match use limited to 45 images, no video emulation. No use in betting, games or single club/league/player publications. / AFP / IKIMAGES / IKIMAGES (Photo credit should read IKIMAGES/AFP via Getty Images)
