Conor McGregor is the name on everyone's lips at the moment, with every Tom, Dick and Harry having their say on the Irishman's recent win at UFC 205.
By defeating Eddie Alvarez at Madison Square Garden on November 12, McGregor became the first fighter in UFC history to hold two belts simultaneously.
He has since announced he will take a break, with the lightweight and featherweight champion expected to return after wife Dee Devlin gives birth to their first child in May 2017.
A number of fellow UFC fighters have since called out McGregor, including Gegard Mousasi and Kevin Lee, with Chan Sung Jung the latest to criticise The Notorious.
The Korean recently returned from a two-year service in the army and, in quotes relayed by MMAMania, expressed dismay at the "mess" McGregor has left the featherweight division in.
"Conor McGregor has made a mess of the featherweight division," he said. "I don't think he'll be coming back to featherweight though. A lot has happened in my time away.
"We'll have to see what happens. We have to see if McGregor is going to defend the belt or not. I doubt it, though.
"He's doing well for himself. McGregor is very good at what he does. Only he can get away with that kind of stuff. It's too bad we are not in the same division.
"Since I don't think he's coming back down to featherweight, we probably won't get the chance to fight. But, obviously, he is become a big star and is making lots of money.
"I honestly don't know if it's good for the sport, since he's just looking after himself."
Judging by McGregor's post-fight comments in the Octagon earlier this month, I doubt he'll care what Jung thinks about him.
"I've spent a lot of time slating everybody in the company. Backstage I'm starting fights over everybody," he told Joe Rogan after beating Alvarez.
"I've ridiculed everyone on the roster, I just want to say from the bottom of my heart, I'd like to take this chance to apologise to absolutely nobody.
"The double champ does what the f*** he wants."
Do YOU want to write for GiveMeSport? Get started today by signing-up and submitting an article HERE: https://www.givemesport.com/writeforgms