Speaking at the press night of Spamalot, Revel Horwood told The Daily Telegraph that his reputation as the meanest judge on the show may be under threat.
"I think she's going to be a bit of a bitch, really," he said. "I hope she doesn't out-bitch me - that's my biggest worry. If that happens, I'll have to bring it on.
"We haven't met up yet, but I know her. She's going to be a lot tougher, a lot harder."
Former ballerina Bussell - who first appeared on Strictly as a guest judge in 2009 - has replaced Alesha Dixon on the panel for the tenth series of the BBC show, after Dixon made the move to ITV and appeared as a judge on the latest series of Britain's Got Talent.
The new series of Strictly Come Dancing is expected to air this autumn and producers are said to be keen to have "as many London 2012 competitors as possible" taking part.
Photo gallery: Rumoured celebrities for Strictly Come Dancing 2012:
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