DIEGO COSTA trolled Antonio Conte by scrubbing his former boss' name off a team-sheet.
The Spaniard helped the Italian win the Premier League title before quitting to join Atletico Madrid.
Costa's exit came after a bitter spat with Conte and the striker clearly still has an axe to grind.
Watching footage of the Blues take on Barcelona, he took a screenshot of the team but scribbled over the manager's name before posting.
Costa presumably enjoyed the action as Barca romped to a 3-0 win at the Nou Camp to take their place in the Champions League quarter finals.
After a 1-1 draw at Stamford Bridge, Lionel Messi netted the fastest goal of his career to pile the pressure on the visitors.
Trouble breaks out between heavy handed Barcelona security and Chelsea fans outside the Nou CampAnd Ousmane Dembele crashed in a second before Messi added a third.
Costa has been plying his trade in the Europa League this season with Atleti 3-0 up after the first leg of their last-16 clash against Lokomotiv Moscow.
LIO-HELL Barcelona 3 Chelsea 0 (4-1 agg): Lionel Messis double and Ousmane Dembeles strike see Antonio Contes men crash out of Champions League
Chelsea ace Diego Costa parties in Atletico shirt - and mocks Antonio Conte