Plans for a new tournament which hopes to attract 16 of the world's elite boxers with a total prize fund of $US50 million has been revealed.

Conor McGregor's coach John Kavanagh says his star pupil would beat Floyd Mayweather in a boxing bout.

Australian Jeff Horn's fight with Manny Pacquiao is off, with the boxing great's promoter confirming he will seek a lucrative bout in the United Arab Emirates.

Manny Pacquiao's advisor says Jeff Horn's fight with the boxing great remains on the table and could be confirmed next week.

Georges St-Pierre has officially signed a new fight agreement with the UFC, company President Dana White told the Los Angeles Times on Friday, giving the organization a bona fide pay-per-view headliner to cushion the absence of Conor McGregor.

At the more rarefied pay-cheque end of sport, there's been a buzz around for some time about a prospective fight matching Floyd Mayweather with Conor McGregor.

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Roll up! Roll up! Roll up! Floyd Mayweather v Conor McGregor!

Over months of verbal sparring between Conor McGregor and Floyd Mayweather, it became increasingly apparent that a mega-fight between the two wasn't a mere vehicle for trash talk, but an event that might actually take place. This week brought news that the two combat-sports superstars have, in fact, agreed to terms on a meeting in the ring.

Australian welterweight Jeff Horn's dream fight with Manny Pacquiao is up in the air with the legendary Filipino running a Twitter poll asking followers to choose his next opponent.

Manny Pacquiao has asked fans to vote his next opponent for a bout to be held in the UAE but Duco Events are steadfastly saying Brisbane remains on the table until powerful promoter Bob Arum says otherwise.

Australia's biggest fight now stands on uncertain ground with Manny Pacquiao's advisor saying it was '100 per cent' to be held in the UAE instead of Suncorp Stadium. But Duco haven't given up hope of a bout in Horn's home of Brisbane.

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An Green/Mundine rematch? On their heads be it.

Enter the adrenalin-charged world of an events promoter, where fortunes can be made or lost on the strength of a hunch, the contents of a sealed envelope and your capacity to spruik a dream.

Anthony Mundine has reportedly lodged an official appeal against his controversial points decision loss to Danny Green in last week's fight in Adelaide.

Anthony Mundine has revealed he will consider appealing against his controversial points decision loss to Danny Green and ruled out a rematch against his arch rival over fears he would again be "robbed" in a third fight.

Foxtel has signalled it will take legal action against an Australian man who broadcast the Danny Green v Anthony Mundine fight on his Facebook page on Friday night.

Anthony Mundine is adamant he was "robbed" in his controversial points decision loss to Danny Green and claimed the size of the ring was doctored to favour his arch rival.

Anthony Mundine says he was robbed after his spilt-decision loss to Danny Green.

Danny Green was seeing double. His legs were jelly. All he could hear was a numb whirring.