UFC president Dana White hinted that former heavyweight champion Brock Lesnar returning to the UFC is “definitely a possibility.”

Lesnar announced his retirement from mixed martial arts in 2011 following a TKO loss to Alistair Overeem at UFC 141. He also dealt with the digestive illness diverticulitis throughout his time in the UFC.

Since leaving MMA, the 36-year-old has been doing some work with professional wrestling’s WWE, but Lesnar has been in contact with White and there have been rumours he is considering making a comeback because he has regrets about how his 4-3 UFC career ended.

“Me and Brock talk,” White told reporters following UFC Fight Night 35 in Duluth, Ga. “I said recently he said he had has some regrets with MMA because he wasn’t healthy, because he was going through those stomach problems the whole time he was here. So he has regrets.”

Lesnar, who went 5-3 in MMA overall, picked up wins over Heath Herring, Randy Couture, Frank Mir, and Shane Carwin in the UFC and became heavyweight champion when he knocked out Couture in just his fourth pro fight.

“He told me he thinks a Brock Lesnar who was 100 per cent could have done much better,” White said. “I told him, ‘you’re out of your [expletive] mind. You came in here with one fight, and you became the heavyweight champion.’”

White didn’t say there were any definitive plans for Lesnar to return to the UFC, but he is open to the idea.

“It was fun having Brock here. He has some regrets, and would he like to fight again? I’m sure he would. So we’ll see how this whole thing plays out. It’s definitely a possibility.”