The former world heavyweight champion has not stepped inside the ring since he was defeated by Mike Tyson in three rounds 20 years ago.
He told hosts Holly Willoughby and Phillip Schofield that he ‘didn’t have a choice’ about returning to boxing as he has ‘so much energy’, which he says is a result of the bi-polar medication he is taking.
"I've been in the gym all the time,” he said. “That's why I want to come back into boxing.
"I'm going back into boxing as well."
Phillip asked: "Is that a good idea?
"I haven't got a choice. I train everyday," Frank told him.
The 54-year-old admitted he didn't like being challenged by younger boxers, adding that certain promoters had been disrespectful to him.
"I can't sit down and let these so called promoters, say Anthony Joshua can knock me out in two rounds when I'm not even dead," he explained.
The boxing legend went on to reveal the medication he takes for his bipolar disorder, which he was diagnosed with in 2003, was causing him problems.
"They made me suicidal. They mess up my head. I can't sleep. I have so much energy," he said.
Despite his claims, it is unlikely that Bruno will be able to obtain a licence from the British Boxing Board of Control, because of his health history and age.
It’s a view that is shared by veteran promoter Frank Warren, who told Sportsmail: “I was quite involved when he was having his problems before and I just hope he can find something in his life that makes him happy.
"Maybe that should be working with young fighters because Frank has an awful lot to offer.
“But he should not be fighting, absolutely not.”