Arsenals Chilean striker Alexis Sanchez (L) vies with Chelsea's Serbian midfielder Nemanja Matic during the English Premier League football match between Chelsea and Arsenal at Stamford Bridge in London on September 19, 2015. AFP PHOTO / IAN KINGTON 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 IAN KINGTON/AFP via Getty Images)
