MMA fans have been left feeling worried for Michael Chandler ahead of UFC 303.

‘Iron’ has been tasked with welcoming former dual-weight UFC champion Conor McGregor back from his lengthy injury layoff at the T-Mobile Arena in Las Vegas on June 29.

McGregor fractured his tibia and fibula at UFC 264Credit: Getty

Some people questioned whether McGregor could return from the broken leg he suffered at UFC 264 in July 2021, but opinions are changing with every bit of training footage he uploads to social media.

On Sunday, ‘Notorious’ shared a clip of him using his new ‘titanium shin bone’ to crack a heavy bag with a series of devastating kicks.

The video left some UFC fans concerned for his return opponent.

One person wrote: “Chandler is going cold lol.”

Another said: “And so the greatest comeback of all time begins!”

A third person morbidly joked: “RIP Chandler.”

Someone else commented: “With that metal leg it’s like swinging a 9 iron at someone.”

McGregor recently revealed that his plan is to KO Chandler with a kick from the same leg that cost him dearly during his trilogy fight with Dustin Poirier almost three years ago.

‘Notorious’ wants to return in emphatic fashionCredit: @tidlsport – instagram

He plans to KO Chandler with the same leg that’s kept him sidelined for so longCredit: @TheNotoriousMMA – Twitter

“God bless medical science,” he said on This Life of Mine with James Corden.

“God bless my pockets, my net worth and being able to afford care at the highest, highest level. I had the best care.

“I am ‘Terminator’ now. I have a titanium rod that goes into the knee and down to the bone, right down to my ankle.

“It’s unbreakable, so I have free reign to kick now, so I’m ready to go and I’m excited.

“I wish for, and I will work for landing this kick with this steel bar in my leg against an opponent and getting them out of there.

“I want to see a picture of myself in the Octagon with my leg broken, and then I want to see a picture of myself in the octagon with my leg wrapped around my opponent’s neck or head and putting him out and side by side.”