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Mike Tyson has shared a ferocious training video where he tells the world 'I'm back'. You can watch it here:
The 53-year-old former world champ showed off his impressive physique, speed and vicious power as he trained alongside Muay Thai coach Rafael Cordeiro.
Iron Mike hasn't been in the boxing ring professionally for 15 years but has been ramping up his training recently - and posting it on to social media for us all to see.
This most recent clip seems to properly hint at a comeback - it sees the boxing legend announcing 'I'm back', just as the 25-second video comes to an end.
The post, which he uploaded to his Instagram account, looked like it was also a promotion for something called Smart Cups.
He wrote: "Anything is possible when you are smart about it. Train Smart. Recover Smarter. @smartcups," before adding the hashtags: "#baddestmanontheplanet #stillthebaddestmanontheplanet".
Fans flocked to the post with 50 Cent commenting: "Mike look like he can win another title," and Ryan Garcia adding: "I got scared when you said I'm back."
American comedian and TV host, Steve Harvey wrote: "Man oh man Lawd ham mercy!!!!
This was the last great heavyweight CHAMP!!!!! One MO Time!!!"
While someone else pointed out: "It takes a brave man, pads or no pads to stand in front of Iron Mike and do that. Str8 punishment."
As Tyson prepares to make this rumoured come back, his new trainer Rafael Cordeiro had told talkSPORT that his client has the speed and power of a 21-year-old and said, "He's going to kill somebody."
Three-time Brazilian Muay Thai world champion Cordeiro said: "As soon as we started training I said, 'My Lord.' I didn't know what to expect from a guy who hasn't hit mitts for - I think - almost ten years.
"So I didn't expect to see what I saw - I saw a guy with the same speed, the same power as a guy who is 21, 22 years old.
"And I can tell; you would have to be a good guy to spar with Mike, because if you don't prepare, he is going to drop you for sure - 100 percent. The power is different level.
"I have trained a lot of heavyweights in my career, with not a lot of respect for everybody, but he is almost as powerful as Wanderlei Silva is right now.
"When you talk about power, I held his right hook and thought, 'He is going to kill somebody.'"
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