Conor McGregor is indisputably one of the biggest characters in the world of MMA and the UFC. He's a competitor who has won almost everything there is to win in the sport. Unfortunately, the Irish fighter doesn't seem to win that often when it comes to his out-of-the-Octagon behavior. This past week, McGregor was sued after smashing the phone of a fan outside of a Miami nightclub. It isn't the first time McGregor has gotten himself into trouble and some people are worried about his well being. One of those people is actor Sylvester Stallone, who spoke to TMZ Sports about the fighter.

"This is a crossroad in his life. This is probably the most important one because if he doesn't live up to his ideal ... if he can't overcome his fear and beat this man, I think it'll plague him for the rest of his life," Stallone said referring to Conor's rivalry with Khabib Nurmagomedov. "I think [Conor] lost last time because he got resentful, he got prideful, he got arrogant ... put his hands down ... he walked right up to that gentleman and he just got smashed in the face when he could have been defensive. There was no Plan B. Not even a Plan A minus."

Stallone added that he hopes to see a rematch between the two fighters, although, as McGregor has stated in the past, it doesn't look like that will happen anytime soon.