Uefa has charged Chelsea players Didier Drogba and Jose Bosingwa for insulting the referee after their 
Champions League exit at the hands of Barcelona.
Disciplinary proceedings have also been initiated against Chelsea for the improper conduct of their players and the throwing of missiles by their fans.
Uefa has asked for a response by 29 May and will deal with the case on 17 June.
The Blues lost their semi-final after a series of controversial refereeing decisions by Tom Henning Ovrebo.
The Norwegian turned down a host of strong penalty appeals from Chelsea during their 1-1, second leg game at Stamford Bridge on 6 May that saw Barca go through on away goals.
Drogba and several team-mates surrounded Ovrebo after the final whistle to remonstrate with the Norwegian official over several of his decisions.
