Chris Pizzello and Matt Sayles/Associated Press

By all accounts, there was nothing gentlemanly about the recent bar brawl involving Chris Brown and Drake. The combatants lobbed champagne bottles and glasses at one another and trashed a classy Soho nightclub.

Now a celebrity boxing promoter has offered the two pop stars $1 million each to settle their dispute like proper gentlemen, according to the Queensbury Rules, donning gloves and going three rounds in the ring for charity.

“It’s more of a show than anything, and we can raise a million for charity,” the promoter, Damon Feldman, said by phone on Wednesday. “Instead of fighting in a bar they could get paid to fight.”

Mr. Feldman, who operates the Celebrity Boxing Federation in Pennsylvania, said he would like the spectacle to include Rihanna, the pop diva who has dated both men and has been a cause of tension between them.

“We would like to have Rihanna as a ring girl, but if she doesn’t take our offer, we know she will be watching,” he said.

Mr. Feldman said he has the financial backing of Alki David, a digital entrepreneur who has agreed to pay the singers for their appearances and to donate $1 million to a charity that helps abused women. The fight would be staged in Las Vegas or Los Angeles on Aug. 25. If they accept the challenge, Drake and Mr. Brown would fight three one-minute rounds, wearing oversize 24 ounce gloves and headgear to limit the risk of injury.

Neither Drake nor Mr. Brown has responded to the offer, Mr. Feldman said.

Mr. Feldman, a former prize fighter, has tried to carve out a niche in the entertainment world with celebrity fights, staging more than 50 of them in recent years, mostly in the Philadelphia area. He has promoted fights featuring the baseball player Jose Canseco, Lindsay Lohan’s father Michael Lohan and Rodney King. One bout he staged was between Danny Bonaduce, who starred years ago in the “Partridge Family,” and the Reverend Bob Levy, a comedian from “The Howard Stern Show.”

Two years ago, Pennsylvania’s State Athletic Commission accused Mr. Feldman of staging faux fights with scripted outcomes and of putting on boxing competitions without a promoter’s license. Mr. Feldman argued his events were pure entertainment with no risk of serious injury, like some professional wrestling matches, and should not be regulated by the athletic commission.

Still, he pleaded no contest last year to charges he had staged fights without a valid promoter’s license and was barred from promoting any bouts in Pennsylvania for two years. He denies he has ever rigged the outcome of a celebrity fight, though he says they are not intended to be taken seriously as sporting events.

“It’s entertainment,” he said. “It’s the WWE of boxing.”

The police are still investigating the fight, which erupted just before 4 a.m. at the W.i.P. club on Vandam Street on June 14. Both Drake and Mr. Brown were sitting with friends in the packed club, where a party was underway for the manager of the singer Ne-Yo. A witness said the violence started when Drake rejected a bottle of champagne that Mr. Brown had sent to his table. Bottles and glasses were thrown by both camps, leaving eight people with injuries, including Mr. Brown and Tony Parker, a professional basketball player.

Since the melee, the police have shut down the club, saying the owners had failed to rectify several outstanding code violations. On Tuesday, the State Liquor Authority suspended the club’s liquor license, citing the violence in its decision.