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The 54-year-old faces Jones Jr in an eight-round exhibition bout on Saturday and it'll be his first action in 15 years.
Former welterweight champion Zab Judah has been training with Tyson and he thinks 'Iron Mike' has too much power to hold back.
"I just finished up a training camp with Mike Tyson," he begun on Instagram per Daily Mail. "I'm here to tell the world that Mike Tyson is coming into the ring Saturday night to put in a lot of pain. He's not playing, this is not a game.
"I understand they're playing around and throwing the rulebook around, but my bro coming to hurt something.
"So I want everybody to know that this is not going to be a game. The Mike Tyson you know from the past, I think he's back.
"Let me tell you why: there was a guy who came to the training camp and he came with a full set of teeth but he left with one tooth missing.
"So that's back to the intensity of what Mike is doing again. Bro is on it. It's going to be crazy."
Despite the California State Athletic Commission insisting there will be no knockouts, streaming service Triller say otherwise.
Triller paid "north of $50 million" to secure streaming rights and co-owner Ryan Kavanaugh believes the fight will be judged with knockouts allowed.
"Know there have been some false rumours swirling, so to be crystal clear - the WBC is scoring the fight," he said.
"There could be a knockout and there will be one winner.
"Anyone who says there is going to be no judging or no winner either does not understand the rules or has their own agenda. Unquestionably. 100%."
Statement now released by Triller insists KOs are allowed in Mike Tyson vs Roy Jones Jr exhibition. If it goes distance, the 'winner' will be announced based on scores from WBC ex-fighter judges.- Michael Benson (@MichaelBensonn) November 25, 2020
California Commission previously said KO is not the aim, WBC scores not official.
He continued: "The only difference in this fight is the gloves are 12 ounces, there are eight rounds and the rounds are two minutes rather than three. That is it.
"We have nothing but the utmost respect for Andy and everyone at CSAC.
"For total clarity we are not implying that CSAC is picking a winner or scoring.
"World Boxing Council [WBC] is scoring and a winner will be determined using those scores as a basis."
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