George Kambosos and Devin Haney have struck a deal for a June 5 fight for the undisputed lightweight championship at Marvel Stadium in Melbourne, Australia, sources tell ESPN.

The bout will be broadcast in prime time in the United States on June 4 on ESPN; it will take place Sunday afternoon in Australia.

Haney, a rising star from Las Vegas, has competed on DAZN for Eddie Hearn's Matchroom Boxing during his past six fights, but that deal expired. The 23-year-old Haney signed a multifight co-promotional deal with Top Rank and Lou DiBella to fight exclusively on ESPN platforms, sources said.

The deal includes a rematch clause if Haney wins, sources said. In the event Kambosos loses and exercises his right to a return bout, that fight would also take place in Australia. Even if Haney loses, his next bout afterward would be co-promoted by Top Rank and DiBella.

Kambosos, who holds all four major sanctioning body titles at 135 pounds, needed an opponent for the first defense of his championship after Vasiliy Lomachenko decided to remain in war-torn Ukraine rather than head to Australia for training camp.