UFC fighter Conor McGregor may have only fought one fight in the pro boxing ring, but his performance against Floyd "Money" Mayweather already has the sport's movers and shakers lining up opponents for him. 

Queensland Premier Annastacia Palaszczuk, whose government supported a planned rematch this month between Jeff Horn and Manny Pacquiao, now has the Irish UFC fighter in her sights for Horn, according to boxingscene.com.

"If we could get McGregor, that would be great," she told reporters in Brisbane.

It's an intriguing prospect given that McGregor actually landed more punches on Mayweather, 111, and in two fewer rounds, than the 81 Pacquiao managed in his fight with the American in 2015, according to Compubox.

However, Pacquiao claimed afterwards that a right shoulder injury had made him reluctant to throw his jab against Mayweather.

Horn may prove a challenge too far for the Irishman, though, with Mayweather, at 40, considered well past his prime in downing McGregor in the 10th.

The American also ended a two-year hiatus away from the ring to face McGregor.

In contrast, Horn, at 29, 11 years Mayweather's junior, and with a record of 17 wins, 11 by knockout, and one draw in 18 fights, is likely to prove a much tougher proposition.

News of the proposed McGregor-Horn match-up comes after Palaszczuk accused Pacquiao of running scared of a rematch with Horn.

Pacquiao had planned to exercise a rematch clause, but has now informed his camp it will not be happening this year due to clashes with his duties as a senator in the Philippines.

The Filipino was seeking revenge for a controversial points decision in June despite landing more punches, 182 of 573 thrown (32%) than Horn's 92 of 625 thrown (15%), a decision which was investigated, and ultimately supported by the WBO, following a request from the Philippine Games and Amusements Board.

In comments which are sure to stoke the fires further, Palaszczuk told reporters: "For Manny not to reappear, really that says to me that he knows Jeff is the world champion.

"Frankly, I think he's a bit too scared to come and face Jeff Horn".