Floyd Mayweather isn’t out of Conor McGregor’s system quite yet, but MMA is still on his mind.

The UFC lightweight champion talked about his “Money Fight,” his division’s title picture and took a few shots at former sparring partner Paulie Malignaggi today during a Q&A fan event in Glasgow, Scotland.

McGregor (21-3 MMA, 9-1 UFC, 0-1 boxing) entertained the idea of a rematch with Mayweather (50-0 boxing), telling fans the newly retired boxing kingpin’s spending habits – and tax troubles – might lead to a rematch.

McGregor says he could get a phone call to fight Mayweather again. Cites May's tax issues. — Chisanga Malata (@Chisanga_DStar) September 29, 2017

With different training, McGregor boasted, he wouldn’t just win – it would be the easiest fight of his career, Daily Star reporter Chisanga Malata tweeted from the event at the SEC Armadillo auditorium.

McGregor says had he changed his prep for Mayweather it would've been the easiest fight of his career. — Chisanga Malata (@Chisanga_DStar) September 29, 2017

The good news, McGregor said, is that he is still counting his money from the mega-event this past month in Las Vegas.

McGregor says he's still counting how much he made from fighting Mayweather. — Chisanga Malata (@Chisanga_DStar) September 29, 2017

McGregor didn’t rule out a return to the octagon by year’s end, even though UFC President Dana White has already ruled it out.

McGregor’s longtime coach, John Kavanagh, recently predicted “The Notorious” won’t fight until 2018 – and is hopefull he’ll take on Nate Diaz (19-11 MMA, 14-9 UFC) in a rubber match on St. Patrick’s Day.

But according to McGregor, that fight isn’t a lock. Diaz, he said, is likely to “price himself out” of a third fight.

A fight at the year-end UFC 219 would be fine, McGregor said, if he could simply weigh in and throw down, according to Irish Mirror and MMAFighting.com reporter Peter Carroll.

McGregor says the only way he fights on Dec. 30 is if he only has to show for the weigh-in and then fight — Peter Carroll (@PetesyCarroll) September 29, 2017

Another rival, former sparring partner Paulie Malignaggi (36-8 boxing), got an invitation to the octagon. McGregor reportedly called the ex-boxing champ – his former sparring partner for Mayweather – “a rat” and told him to “bring his balls” for a showdown in MMA.

McGregor tells Paulie Malignaggi to bring his balls and come to MMA — Chisanga Malata (@Chisanga_DStar) September 29, 2017

Other opponents also beckon. McGregor said he’s looking forward to the upcoming interim lightweight title bout between Tony Ferguson (22-3 MMA, 12-1 UFC) and Kevin Lee (16-2 MMA, 9-2 UFC), which takes place next week at UFC 216, as well as the showdown of “The Ultimate Fighter 26” coaches Justin Gaethje (18-0 MMA, 1-0 UFC) and ex-champ Eddie Alvarez (28-5 MMA, 3-2 UFC).

McGregor also mentioned the possibility of a fight with Khabib Nurmagomedov (24-0 MMA, 8-0 UFC) in Russia, a matchup UFC President Dana White told MMAjunkie months ago was high on the champ’s list.

But in the end, McGregor indicated he would wait how the division shakes out before making a final decision.

“Let me see what these two fools do this weekend,” McGregor said of Ferguson vs. Lee.

For more on the UFC’s upcoming schedule, check out the UFC Rumors section of the site.