Costa gives Willian the middle finger as he takes a selfie.
Chelsea are on their way to Lisbon, with the Blues due to face a Champions League clash against Sporting that has taken on adding significance after their failure to beat Schalke at Stamford Bridge on the opening match night.
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Diego Costa, however, did not appear to be happy to be on his way to the Portuguese capital, although we’re not sure whether he meant this gesture captured in Willian’s selfie!