Greg Jackson has said that Alistair Overeem is an “amazing teammate“, but clearly the heavyweight’s former training partner, Matt Mitrione, disagrees.

A while back now, Overeem announced he was leaving the renowned, Blackzilians camp in South Florida, and eventually joined Jackson’s MMA in New Mexico. After his departure, some of his teammates came forward and said Overeem wasn’t really part of the team, and Mitrione has repeated those claims.

Recently Mitrione appeared on “The Fighter and the Kid” podcast, and during the show he reported that he offered Ben Rothwell a few tips, before the latter went on to fight and stop Overeem last September. While discussing why he did that, Mitrione furthered (quotes via FOX

“I just don’t like Overeem. I’d like to see him lose,” he said.

“I don’t like him as a human being. … He is a smug, arrogant man. He came to the Blackzilians and ostracized himself almost immediately.

“He’d come in and work out at, like, 11:30 at night so nobody else could see what he was doing.”

How about that? Well, all this aside, it looks like Overeem’s fitting in well with Jackon’s MMA, and he’s also coming off a KO win over Stefan Struve. Up next, at UFC 185, Overeem will take on Roy Nelson.

Mitrione, meanwhile, is booked to fight Rothwell on June 6th. The athletic heavyweight heads into the bout having won three straight fights, and Mitrione is currently ranked #13. Rothwell, on the other hand, has won two in a row and is ranked #10.

Both of those fights have the potential to be pretty, pretty, entertaining and short.