Lee Murray says he would do the same thing again because it was "the right thing to do".
Key Highlights :
The former fighter, whose last MMA bout was against Anderson Silva, is keen to return to the sport in some way when he is released from prison in 2035.
The fighter, who is currently serving a 10-year prison sentence for assault, told ESPN that he would like to fight again, but is unsure of the best way to do so.
"I want to fight again," he said. "I don't know if it's in the UFC, I don't know if it's in Bellator, I don't know if it's in Japan or wherever. I just want to fight again. I'm not going to sit around and wait until I get out of prison to fight again. I'm going to do something while I'm in prison."
The fighter, who is also known as War Machine, is one of the most decorated fighters in MMA history, with a record of 34-7. He is best known for his victory over Silva in 2013, which was considered one of the greatest fights in MMA history.
War Machine is one of several high-profile fighters who have been imprisoned in recent years, with several others, including UFC fighter Jon Jones, currently serving prison sentences for various offences.
War Machine's imprisonment has led to concerns about the safety of MMA fighters, with some calling for the sport to be banned due to the high number of injuries and deaths that have occurred in recent years.
However, War Machine is adamant that he is not a danger to other fighters and that he will be a valuable member of the prison population when he is released.
"I'm going to be a good inmate," he said. "I'm going to do everything they tell me to do. I'm going to be a model inmate. I'm going to learn everything I can. I'm going to make friends. I'm going to help out. I'm not going to be a problem. I'm not going to be a threat to anybody. I'm just going to be me. I'm just going to be War Machine."