Conor McGregor's transformation into a boxer shows his hulking physique ahead of the long-awaited return to UFC.

CONOR MCGREGOR appears to be in top condition as he prepares for his return to UFC - which he hinted would be "soon".

During his recovery from last July's horrific broken leg, the MMA star has gained several pounds.

He looked great in an Instagram photo showing him drilling a heavy box at Crumlin Boxing Gym, Dublin.

As he practiced right hooks and overhand rights, the Irishman's arms and back bulged.

UFC fans were much more interested in the captions than the photos themselves.

It said: "Right hook deliciousness." The countdown is fast approaching, so catch you soon.

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McGregor's followers flock to the comments section with one comment: "The new series."

Another one said, "Let's f ****** get." Come back like Rocky did."

Another said, "Let's go king!" Let them know what's up! !"

One commented, "Can't wait for you to be back in the Ring Champ."

Another participant said: "Soon, Conor will deliver a crushing knockout."

McGregor is currently in the final stages in his recovery from the broken leg sustained in his fight against Dustin Poirier, former interim lightweight champion.

Although the Dubliner had hoped to return to the Octagon in summer, UFC president Dana White thinks that autumn is more realistic.

SunSport was informed by him that he is looking forward to early fall if all goes well.

McGregor's autumn return date is contingent on his leg being fully healed and doctors giving him the all clear.

White said: "If his leg heals well and he is given the clearance to start training, then he may be able to train in the early fall."

The UFC brass have no opponents for McGregor's much-anticipated return fight.

White stated that he literally has nothing to offer him right now and that he isn't ready.

"The landscape could be changed over the summer.

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"We'll wait to see if he's willing to fight.

"And when he gives us 100 percent clearance, we'll begin looking at potential opponents."