UEFA asks referee at helm of Chelsea's knock out to refile report

UEFA has asked the referee at the heart of Chelsea's Champions League knock out to refile his match report.

Tom Henning Ovrebo has been given an extra 72 hours to expand on his official report before UEFA bring any charges against Chelsea.

The Norwegian referee faxed his original report from his London hotel on Thursday morning before flying back home to Oslo.

But UEFA officials immediately told the psychologist, 42, that his summary was not detailed enough, News of the World reported.

Ovrebo is expected to name Chelsea stars Didier Drogba and Michael Ballack for their threatening behaviour during and after the Blues' exit against Barcelona.

Drogba, who has apologised for his f-word tirade, is expected to be charged this week and could be banned for the entire group stage of next season's Champions League.

Ovrebo went into hiding with his family after returning home and neighbours say they have not seen him since before Wednesday's game.

He has contacted local media expressing a wish to talk about the incidents, but he has been gagged from speaking publicly by UEFA.

Ovrebo is due to return to domestic action on Saturday when he takes charge of a game at local club Brann Bergen.

The fact that UEFA have given him more time to compile his report and asked for greater depth and detail suggests they are preparing to throw the book at Drogba and Chelsea.