Chris Eubank Junior will not defend his WBA Interim middleweight title on May 9 at Wembley.
The Brighton fighter and also arch rival Billy Joe Saunders have both been withdrawn from the Frank Warren show which will still go ahead.
Warren's Queensberry Promotions have revealed that negotiations over a possible summer rematch between Saunders and Eubank are ongoing.
Eubank Jr was due to fight Australian Les Sherrington in his first title defence.
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