Daniel Cormier and Kenny Florian have both expressed their doubts over CM Punk's future in the UFC.
The former WWE superstar, whose real name is Phil Brooks, signed with the UFC more than a year ago, but has yet to step into the octagon for his first fight, and there is no confirmed date on the horizon for his debut either.
A shoulder injury suffered in October was said to have delayed his entrance, and UFC Dana White has said he is "100%" certain Punk will debut in 2016.
But Cormier and Florian, hosts of UFC Tonight, are growing increasingly concerned.
"As time is passing, it starts to lose some of the intrigue," Cormier said. "I think the iron was hot when he first walked out on the WWE and that's when he would have made the biggest impression on the MMA community because WWE fans would have followed him to MMA."
And Florian agrees.
"This is what really concerns me because they said he was going to fight in 2015," Florian said. "That he needs some time to train. Well, that hasn't happened. I know he has dealt with some other injuries and things like that. But the fact that they say that he's not ready concerns me. It shows that, listen, you don't just jump into this sport and say you're going to compete. It takes time and there's a process. There's a reason why they're telling him to take his time. I think his training isn't coming along as fast as they thought and it's unfortunate."