Tyson Fury has agreed a lucrative multi-fight deal to be co-promoted by Bob Arum's Top Rank Boxing.
The former IBF, WBA, IBO and WBO champion and his promoter Frank Warren announced the deal, said to be worth £80 million, on Monday.
His fights will now be shown on ESPN in the United States, while BT Sport will continue to broadcast his bouts in the United Kingdom.
The news will cast doubt over a potential rematch with WBC champion Deontay Wilder, who has a deal with Showtime, while any future domestic dust-up between Fury and Anthony Joshua may also be complicated due to the latter's contract with streaming service DAZN. Now all three of the sport's top heavyweights are aligned with rival networks.
However, Fury is confident the announcement will not stop an agreement being reached with Wilder for a second meeting between the pair.
"It's the Tyson Fury show now. I've got the biggest TV platform in the world. I call the shots. I still want the biggest fights and that includes Wilder and Joshua," Fury said.
Fury's co-promoter, Frank Warren, added. 'The lineal champion is now in the No 1 position and getting everything he wants.
"ESPN have almost 3 million subscribers and BT here and he has the respect he deserves both sides of the Atlantic... the game has changed dramatically... Showtime are no longer the only show in town for Wilder now that ESPN are in the field. That will involve a lot more discussion.
"As for Joshua, we wanted that also but they didn't... Now they will have to come to us."
Fury is looking at three fights this year and added: "After all the hard work I could fight so I want the first no later than May. I will fight whoever is put in front of me."