Mata was adored at Stamford Bridge, before falling out of favour under Jose Mourinho and moving to Man United in January 2014. Prior to that transfer, he’d helped Chelsea to a historic Champions League triumph, as well as an FA Cup and Europa League title.
On top form, there are few superior wingers in Europe than Hazard. Consistency in his performances has been a problem, but he’s been crucial to two Premier League titles, along with League Cup and Europa League success.
Diego Costa may have been exiled in the summer and eventually sold to Atletico Madrid, but his goals are still a fond memory for Chelsea fans.