UFC and WWE vet Ken Shamrock has a warning and some advice for Conor McGregor if he’s seriously thinking of wrestling.

With a lot of big money options available to him in various combat sports and entertainment avenues, the world is Conor McGregor’s oyster. But according to crossover pioneer Ken Shamrock, the UFC lightweight champion wouldn’t have an easy go of things if he decides to take his skills and apply them to the world of pro wrestling.

Rumor has it McGregor is being offered big bucks to show up at WrestleMania in 2018. If he’s going to try and do more than just cut a promo, it may not go over too well.

“Conor McGregor would have a really tough time trying to transfer over from the combat sport into the entertainment sport,” Shamrock said in an interview with BloodyElbow.com. “Not to say he can’t. It’s possible for anybody. Just because he’s a lighter weight, he would have to have a whole lot of different types of moves in order for it to make sense for him to get in there and be able to wrestle the bigger guys.”

The WWE has been a big man’s game for a long time now with Vince McMahon relentlessly pushing out pretty much everyone that doesn’t look like a slab of beef. The few exceptions to that rule are usually the luchadors and other high flying personalities.

“Listen, the guy’s tremendous, great athletic ability. But he’s a lightweight. And (there are few smaller-sized athletes in pro wrestling), other than guys that are high flying and have a lot of tremendous ability and their flexibility and movements and head scissors and all those fancy things they do in pro wrestling, which takes a long time to learn.”

“Could you imagine somebody trying to go from a sporting event into an entertainment event, and have to deal with all the psychology?” Shamrock continued. “Putting matches together. Learning how not to rip somebody’s arm off. Learning how not to really punch somebody. Setting up matches. Making it make sense. Cutting a promo, which he already knows how to do. There’s a whole lot there. Really, really difficult to do.”

This is all coming from the perspective of McGregor going full on into pro wrestling, which clearly isn’t a real possibility. While he may show up at a big pay-per-view and throw some top WWE superstars around like Ronda Rousey did, the chances of him committing to the art (and the grind) of wrestling is slim to none. Which, again, according to Ken Shamrock, is a good thing.

“Just to walk right in the ring and just start doing matches, it would kill him,” Ken finished. “He wouldn’t be the dominating thing that everybody’s used to seeing.”