CHELSEA will learn today the extent of the disciplinary charges they will face as a result of the fall-out of their Champions League clash with Barcelona.

UEFA disciplinary chiefs have been studying the reports from match referee Tom Henning Ovrebo and their match delegate and will decide on action today.

Didier Drogba and Michael Ballack are expected to face charges following their actions towards Ovrebo, and Chelsea could also be charged with failing to control their players after the match official was surrounded at the final whistle.

There were angry scenes with Chelsea furious at having four penalty claims turned down during the 1-1 draw which saw Barcelona through to the final.

A UEFA spokesman said: ‘‘We will see the report from the referee and match delegate before deciding whether to take any action or not.’’ Chelsea manager Guus Hiddink and skipper John Terry were both scathing about the referee but UEFA will not be drawn into any discussion about his performance or suggestions that they did not want another all-English final.

The UEFA spokesman added: ‘‘We never comment on the performance of the referee.’’ Ballack was so incensed by one decision that he ran fully 40 yards protesting alongside the referee and was eventually yellow-carded.

Worse was to come on the final whistle when Drogba, who had been substituted in the second half, appeared from the tunnel to confront the Norwegian.

UEFA’s general secretary David Taylor dismissed any suggestion of a conspiracy to avoid a repeat of last year’s all-Premier League final.

Chelsea coach Guus Hiddink was repeatedly asked about ‘‘a conspiracy’’ at the post-match news conference - something that infuriated Taylor, who pointed the finger at the media instead.

Taylor said: ‘‘If anything it’s a media conspiracy against UEFA. It does make me angry. It really annoys me because it’s a load of rubbish.’’ Ovrebo was smuggled out of England after the game and has been asked by UEFA not to speak publicly about the match.

Ovrebo told Norwegian newspaper Aftenposten: ‘‘Because of the circumstances after the match, UEFA have asked us not to comment to the press.’’ Drogba last night apologised for his behaviour. In a statement on the Blues’ official website, www.chelseafc.com, the Ivorian said: ‘‘I was very upset at what happened during the game, but having seen the pictures on TV I accept that I overreacted.

‘‘I also accept that the language I used did not set a good example for those watching at home, especially children.

‘‘I regret that in the heat of the moment I let out my incredible frustration and disappointment in this way, and for that I apologise.’’ Andres Iniesta had lashed home a 93rd-minute leveller for Barcelona to cancel out Michael Essien’s opener and put the Catalans through.