Eddie Hearn admits British boxing will have to get used to some of its top stars fighting more in America rather than at home.
The likes of James DeGale, Amir Khan, Carl Frampton and Lee Selby have signed for powerful American boxing manager Al Haymon and his Premier Boxing Champions (PBC) series, which is broadcast on free-to-air and cable networks in the States.
Others such as Doncaster's WBA bantamweight champion Jamie McDonnell and west London super-middleweight George Groves have recently fought in world title fights in the States, with more and more British fighters now involved in big bouts there rather than on home soil.
Selby is set to defend his IBF world featherweight title in Arizona on October 14, and his fellow Welshman Nathan Cleverly is also due to box in Chicago two days later. Londoner DeGale, the IBF world super-middleweight champion, is being lined up to face Canada-based Romanian Lucian Bute in America in November, although Manchester's Scott Quigg is now looking like he will defend his WBA bantamweight belt in Manchester or London on November 21 or December 12 respectively.
It is not just Haymon's growing stable of fighters, which makes big fights easier to make, and the excellent exposure that PBC can offer that has seen British stars opt to box in America.
Hearn puts the trend down to economics and the wealth of the PBC that makes fighting in the States a more attractive option, but the British promoter insists it will not suit every fighter.
"The fighters that have pay-per-view potential will want to remain in the UK because it's the most lucrative model in boxing unless you are on pay-per-view in America, which is unlikely," Hearn told ESPN.
"Particularly at the lower weights, someone like Lee Selby, someone like Jamie McDonnell who we are trying to work in the PBC right now, it's a great opportunity for them. Lee is a great example of where he's going to make more money boxing abroad.
"The atmosphere [in the arena] is very different. When he is in Phoenix on a Wednesday night it is going to be very difficult and different to boxing at the O2 Arena in London in front of thousands, but you can't ignore the money that is available and it was significantly more than what was available here.
"The money is coming from investment. It's a risky model and it's an aggressive model because they are trying to change the face of boxing. Time will tell if the model will work long term but at the moment there are a lot of fighters who want to take advantage of it and there are some good fights being made.
"It depends upon your position. If you are Anthony Joshua, you've got pay-per-view in the palm of your for the rest of your career it doesn't apply but if you are someone like Lee or Jamie it's a no-brainer."
Hearn insists British boxing - which has seven world champions - is in good health despite some of its stars boxing choosing to box away from home. Big fights are still happening in the UK and 20,000 tickets sold out in just six hours of going on sale on Wednesday for Joshua, the 2012 Olympic gold medallist, versus Dillian Whyte for the British heavyweight title at the O2 Arena on December 12.
"For me where the fighter can earn the most amount of money it's my obligation to take that," Hearn told ESPN.
"Maybe it's a shame for British fans that some will be boxing in the States more but that's life. Until we build boxing to a level where the rights fees increase and we are able to compete, it's what it is.
"What's happening in America is a freak. What we have seen in UK is rebirth of boxing, boxing has become sexy again. I've got people, brands and sponsors saying they want to get involved in boxing and for years we couldn't give away boxing sponsorship. Now it's sexy again and brands want to get involved. Before the PBC boxing in America wasn't really an option and in some cases it's the right thing to do now.
"[IBF world welterweight champion] Kell Brook is in a position where he's a pay-per-view fighter now. Why should he go to America, why can't we have those fights here. I want the Tim Bradley fight in Sheffield. I want the Amir Khan fight at Wembley. I don't really him want to go to America for those."
Hearn also believes PBC will eventually stage events in the UK.
"I think long-term you will probably see some PBC stuff over here as well, probably with us," Hearn told ESPN.
"They have a market to crack in America first and then I guess they would expand into other territories."