Eight division world champion Manny Pacquiao made quite a few headlines recently, when he took to social media to drop a clear indication that he does have interest in fighting UFC superstar Conor McGregor in a boxing ring.

McGregor, the biggest star in mixed martial arts, made his professional boxing debut in August - when he suffered a ten round TKO defeat at the hands of Floyd Mayweather Jr. at T-Mobile Arena in Las Vegas.

McGregor did much better than expected, by winning the first few rounds and making the fight very interesting.

Mayweather vs. McGregor generated huge business - with at estimated 4 million purchases on pay-per-view. McGregor is said to have earned $100 million for the fight, while Mayweather claims to have raked in close to $300 million.

Because of those huge numbers, numerous boxers have been targeting McGregor for a big payday.

Top Rank's CEO Bob Arum, who promotes Pacquiao (59-7-2, 38 KOs), is not overjoyed with the idea of matching his boxer against McGregor.

He believes the fight would be a mismatch and far more one-sided than McGregor's fight with Mayweather.

"If we equate boxing with fighting -- because I'm not talking about his ability as an MMA participant because he has been very good with that -- Conor McGregor can't spell fight," Arum told CBS Sports on Wednesday in an episode of the "In This Corner" podcast that will air next week.

"Mayweather carried him before he took him out. With Manny, it wouldn't be a contest, it would be a money grab. Conor McGregor is not a boxer and does not know how to box. His stance is a stance of an MMA fighter who has to protect against kicks and takedowns. He is not competitive with any fighter no matter how old that fighter is.

"He doesn't know how to spell fight. He's a great, great MMA artist. This is no knock on him. He's a great attraction. He can not spell fight. The answer is no, I wouldn't particularly look forward to doing a fight featuring McGregor and Pacquiao. If Manny asked me to, I would."