George Groves says he will not fight Carl Froch unless the British Boxing Board of Control appoints "neutral officials" for their rematch at Wembley Stadium.

Froch retained his WBA and IBF titles with a ninth-round stoppage against Groves in Manchester on Nov. 23. Groves launched an appeal, saying referee Howard Foster stopped the fight prematurely, and the IBF then ordered a rematch. Froch's belts will be at stake again on May 31.

Groves labelled the ninth-round stoppage a "stonewall robbery" and added that his request for neutral officials was "conditional on the fight going ahead."

Both Groves and Froch are British.

With Wembley able to seat up to 90,000, the fight is expected to set a post-World War II attendance record for a boxing match in Britain.

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