LONDON, ENGLAND - JANUARY 13: Diego Costa of Chelsea reacts during the Barclays Premier League match between Chelsea and West Bromwich Albion at Stamford Bridge on January 13, 2016 in London, England. (Photo by Shaun Botterill/Getty Images)
LONDON, ENGLAND - JANUARY 13: Diego Costa of Chelsea reacts during the Barclays Premier League match between Chelsea and West Bromwich Albion at Stamford Bridge on January 13, 2016 in London, England. (Photo by Shaun Botterill/Getty Images)