Promoter Barry Hearn expects negotiations for a world heavyweight title unification fight between Anthony Joshua and Deontay Wilder to begin next week.
Britain's Joshua is now eyeing Wilder's WBC belt having added Joshua Parker's WBO title to his WBA and IBF crowns with a points victory over the New Zealander in Cardiff on Saturday.
A match-up with American Wilder has been anticipated for some time and it now seems likely to occur sooner rather than later with both fighters calling each other out.
Anthony Joshua negotiations to fight Deontay Wilder are imminent, believes Barry Hearn
He called out Wilder after beating Joseph Parker to now hold the WBO, WBA, IBF and IBO belts
Hearn, chairman and founder of Joshua's promoters Matchroom, told BBC Radio Five Live's Sportsweek programme: 'I think negotiations will start next week. It is a fight Anthony Joshua really wants and I think he wants it this year.'
Joshua has said he would like the bout to take place in the United Kingdom but Hearn is not ruling out the possibility of it happening in the United States if the terms are right.
Matchroom view Joshua as a much bigger drawing card in the UK than Wilder is in the US. Taking Joshua across the Atlantic would be more about promoting Joshua in the US than acceding to Wilder's demands.
Hearn said: 'Anthony Joshua wants all the belts - that is the big card Deontay Wilder has got to play (but) commercially, Joshua is far bigger than