Conor McGregor WWE UFC
Conor McGregor of Ireland laughs after the first round against Khabib Nurmagomedov of Russia in their UFC lightweight championship bout during the UFC 229 event inside T-Mobile Arena in Las Vegas, Oct. 6, 2018. Harry How/Getty Images

World Wrestling Entertainment (WWE) superstar Roman Reigns has opened the door for Conor McGregor and Rob Gronkowski to make the switch to pro-wrestling now since they have called time on their respective careers. It could well be a WrestleMania surprise similar to what the promotion did with former Ultimate Fighting Championship (UFC) women’s bantamweight champion Ronda Rousey.

The UFC Hall of Famer made her official debut at the WWE at Royal Rumble when she walked into the ring and demanded a match at WrestleMania, but she had once previously appeared alongside Dwayne "The Rock" Johnson at WrestleMania 31.

Similarly, McGregor could be welcomed by the WWE with chief brand officer Stephanie McMahon having previously admitted that the company will be keen to add him to their roster. The Irishman recently announced his retirement from Mixed Martial Arts (MMA) but has not ruled other forms of combat.

Reigns, the former Universal champion, is certain that McGregor could find a spot on WWE’s 205 Live platform and believes he can challenge the wrestlers in the cruiserweight division. The Notorious, a former two-division UFC champion, is unlikely to be impressed when he hears that he was spoken about as a cruiserweight.

“Man, we got the best spot on 205 Live. He is a cruiserweight, no doubt, and we'll let him go in there and flip with all those guys," Reigns said during an appearance on ESPN Deportes.

The 33-year-old pro-wrestler, who is set to take on Drew McIntyre at WrestleMania 35 on April 7 at the MetLife Stadium in New Jersey, also spoke about Gronkowski. The former NFL tight end announced his retirement in March after nine seasons with the New England Patriots.

The Gronk, as he is popularly known, is no stranger to WWE having already made an in-ring appearance during WrestleMania 33 when he clashed with Jinder Mahal to help his friend Mojo Rawley win the Andre The Giant Battle Royal.

Immediately after Gronkowski announced his retirement, there were many questions with regard to his plans for the future. The Patriots tight end’s fondness for the WWE has made it an obvious destination and Reigns admits that the three-time Super Bowl champion is “wild enough” to make the switch.

"I don't know. You know, it's hard to tell with him. He seems like a crazy enough guy, he seems like he's wild enough, and he has a great personality. He's clearly a great athlete,” Reigns said.