It was that infamous nine-goal thriller at Goodison Park when the Premier League got a true taste of Diego Costa. First impressions: an aggressive goalscorer but also a liability.
Chelsea’s summer signing scored in the first and last minutes, squared up to Tim Howard and Sylvain Distin, then celebrated in Seamus Coleman’s face, risking a red card. Costa got away with it on that occasion and Chelsea went on to win the title with him at the helm.
Last season something changed. There were boos aimed at Costa by some Chelsea supporters and it is coming up one year since a fan unfurled a banner at Stamford Bridge that labelled him a ‘rat’ who let Jose Mourinho down.