Chelsea's Brazilian-born Spanish striker Diego Costa gestures to his bench to be substituted less than 20 minutes into the second half during the English Premier League football match between Chelsea and Stoke City at Stamford Bridge in London on April 4, 2015. AFP PHOTO / GLYN KIRK 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 GLYN KIRK/AFP/Getty Images)
