Lee Selby's world title eliminator against George Kambosos Jr will be on October 31, on the Derek Chisora vs Oleksandr Usyk undercard, live on Sky Sports Box Office.
The winner will become the mandatory challenger to the IBF lightweight title, which Teofimo Lopez will defend in a unification battle with Vasiliy Lomachenko next month.
Welshman Selby is a former IBF featherweight champion plotting a route to a world title in a higher division.
Australia's Kambosos Jr is undefeated in 18 with 10 stoppages.
Selby (28-2, 9 KOs) edged out Scottish legend Ricky Burns via a majority decision at The O2 in London last October to stay in line for another world title shot and now finds himself within touching distance of becoming a two-weight world champion.
"I'm delighted that Eddie Hearn and Matchroom Boxing have managed to get this fight on again," said Selby.
"I'm one step away from a shot at the IBF lightweight title and my dream of becoming Wales' first ever two-weight world champion.
"Kambosos Jr is a hungry young fighter that I know will bring it all, but I've had some of my best performances against Australian boxers stopping both Corey McConnell and Joel Brunker in title fights and October 31 will be no different."
Sky Sports schedule
The Golden Contract - Sept 30 live on Sky Sports
Ohara Davies vs Tyrone McKenna
Jazza Dickens vs Ryan Walsh
Buatsi vs Calic - Oct 4, live on Sky Sports
Joshua Buatsi vs Marko Calic
Chantelle Cameron vs Adriana Dos Santos Araujo
Alen Babic vs Niall Kennedy
Aqib Fiaz vs Kane Baker
Linus Udofia vs John Harding Jr
John Hedges
Ritson vs Vazquez - Oct 17, live on Sky Sports
Lewis Ritson vs Miguel Vazquez
Savannah Marshall vs Hannah Rankin
Joe Laws
Kash Farooq
Qais Ashfaq
Thomas Patrick Ward
Usyk vs Chisora - Oct 31, live on Sky Sports Box Office
Oleksandr Usyk vs Derek Chisora
Lee Selby vs George Kambosos Jr
Povetkin vs Whyte 2 - Nov 21, live on Sky Sports Box Office
Alexander Povetkin vs Dillian Whyte