Chelsea's Spanish forward Diego Costa (L) celebrates after scoring a goal with Chelsea's Brazilian midfielder Willian (R) during the English Premier League football match between Chelsea and Aston Villa at Stamford Bridge in London on September 27, 2014.  AFP PHOTO/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 45 images, no video emulation. No use in betting, games or single club/league/player publications.        (Photo credit should read JUSTIN TALLIS/AFP via Getty Images)