Last week, Anthony Pettis added his voice to the list of fighters who believe that UFC interim featherweight champion Conor McGregor still hasn't quite earned his spot.

"Conor's talking and doing his thing," Pettis said at Friday's UFC Fan Club Q&A in Houston. "But he hasn't beat no one yet."

On Monday, McGregor responded, saying the former UFC lightweight champion has dropped in status.

"As far as I'm concerned, he's back on the Fight Pass events," McGregor said on Monday's edition of The MMA Hour. "He's lower now."

By this point, McGregor has grown accustomed to hearing others trash talk his accomplishments, even after finishing Chad Mendes at UFC 189. But he says his mind has moved on to other topics.

"I don't care," McGregor said. "Like I said before, I'm not in this game for credit. It's cash I'm here for, at this level. I am after the numbers. They'll never give me the credit I deserve, but I do not seek credit from them. I seek cash from them."

McGregor, for his part, said he wants to know who Pettis has defeated.

"Pettis can say I never fought anybody," McGregor said. "But he's never fought anyone. Who's he fought, really? He's fought nobody, as well. His numbers are really, really low. He lost his last fight. That's a crazy, crazy statement from him in my opinion."

For the record, Pettis has defeated Ben Henderson, Donald Cerrone, Gilbert Melendez, and Joe Lauzon, among others. Maybe that's why McGregor hinted that a fight with Pettis might not be a bad idea.

"I like his style of fighting and I think he would be a good fight down the line," McGregor said. "But, he needs to check his mind frame and he needs to look at the numbers and see who he really is at the top of the game, and make his climb back."