Promoter Lou DiBella has sued junior lightweight contender O’Shaquie Foster for breach of contract.

In an 11-page lawsuit filed by attorney John Wirt in United States federal court for the Southern District of New York—a copy of which has been obtained by BoxingScene.com—DiBella is asking a court to uphold the validity of his promotional contract and to prevent Foster from fighting for another promoter.

DiBella is seeking “in excess of” $500,000 in damages.