UPDATE: Australian welterweight Jeff Horn will fight the legendary Manny Pacquiao in April, but his promoters Duco Events are now on a mission to ensure the bout takes place on home soil.
Horn has been locked in to face Pacquiao on Sunday, April 23, Duco confirmed on Tuesday.
But venue for the fight is up in the air, with Brisbane, Melbourne, Sydney, Adelaide, the Middle East and the United States all under consideration.
Earlier On Triple M
Arguably the biggest fight in Australian boxing history is expected to be locked in later on Wednesday.
It's understood Jeff Horn's proposed blockbuster bout against the legendary Manny Pacquiao will go ahead, with an announcement set for 1.30pm local time in Brisbane (2.30pm AEDT).
Horn's promoters, New Zealand company Duco Events, have been in the US holding discussions with Top Rank chief executive Bob Arum, Pacquiao's promoter and one of the most powerful figures in the sport.
It's believed they have signed a conditional agreement that allows planning for the fight to go ahead.
It's not clear where it will be held, and though Brisbane's Suncorp Stadium is the preferred venue, a bidding war is likely to begin with Melbourne, Sydney and Adelaide also in contention.
Manny Pacquiao and Jeff Horn Video: YouTube
Horn, 28, is undefeated after 17 professional fights and last month knocked out South African veteran Ali Funeka while Arum was ringside in Auckland.
Arum has been enamoured with the former schoolteacher and 2012 Olympian ever since and believes he has the ability and image to carve out a US fanbase.
Pacquiao, 38, captured the WBO welterweight title for the third time in his last fight against Jessie Vargas in November.
He has a 59-6-2 record but has not knocked out an opponent since Miguel Cotto in 2009.