The In Da Club star signed Gamboa to his SMS Promotions firm in 2012, but the fighter claims company bosses failed to deliver on their promise to book him three bouts a year.

In legal papers filed in a Connecticut court, Gamboa reveals he fought just once in 2013 and twice in 2014 - and hasn't had any bookings to date this year (15).

He alleges he approached SMS executives months ago to discuss terminating the deal, but Gamboa claims his request was ignored, according to

He is now asking a judge to force SMS representatives to act or free him from his contract.

However, a spokesperson for 50's boxing promotion company has placed the blame on Gamboa himself, claiming his 2014 loss to Terence Crawford led to broadcasting disinterest in his fights.

The defendants also allege, "He was most recently brought an offer to fight against Nicholas Walters and Gamboa's managers advised that he wasn't in good enough shape to do so."

Gamboa isn't the only disgruntled SMS Promotions client - fellow boxers James Kirkland and Ryan Martin have also filed papers to get out of their contracts.

50's SMS Promotions suffered a setback in May (15), when officials filed for bankruptcy, with losses of between $100,000 (£62,500) and $500,000 (£312,500). The company's last fight night was staged in Hartford, Connecticut on 15 May (15), when Reynaldo Ojeda beat Monty Meza Clay by unanimous decision.

50 Cent is also going through financial issues after he filed for bankruptcy protection in July (15).