The UFC star took to social media to share a number of Halloween snaps with his family, saying that they will “welcome another boy”.

McGregor and Devlin dressed in what appeared to be matching Oktoberfest outfits, while son Conor Jr wore a skeleton suit, with youngest son Rian dressed as Spiderman, as daughter Croia could be seen holding a Minnie Mouse teddy.

Commenting on the post, McGregor wrote: “The booze baron and his growing clan, and little spider man too.

“Happy Halloween World! 4 weeks out, we welcome another boy into our family! We are buzzing, Mammy is ready!”

The former two-weight champion and his family are spending time in Dubai after McGregor attended last weekend’s boxing match between Tyson Fury and Francis Ngannou in nearby Saudi Arabia.

Former UFC fighter Ngannou dropped WBC heavyweight champion Fury in the third round and appeared to dominate for much of the 10-round bout despite Fury picking up the victory.

The bout was the biggest crossover fight since McGregor’s bout with Floyd Mayweather in 2017 and the Dubliner said of the shot which knocked Fury down afterwards: “It was a lovely shot, caught him in the back head.

“But fair play to Tyson as well, he’s a tough man as well. Strong chin. Ngannou’s a powerful boy, Tyson couldn’t hurt him. He was missing with that back hand. Great fight, great to watch.”

Conor McGregor at Tyson Fury v Francis Ngannou (Image: TNT Sports.)

He added: “Heavyweight boxing is exciting! Especially from the ringside.

“There’s some great boxing in the heavyweight division, it’s on fire at the minute. Oleksandr Usyk is going to be a tough fight for Fury as well. It’s a crazy game.”

When asked about his return to action, McGregor told TNT Sports: “I’m in a great place, my body’s fully healed. Hopefully April, they’re saying April. So I’m happy.