Mike Tyson has issued a rallying cry to dethroned heavyweight world champion Anthony Joshua - and he hasn't held back.
Joshua lost his three championship belts to underdog Andy Ruiz Jr last month in one of the biggest shocks in boxing history.
The Brit will have the chance to win back his titles when he rematches the Mexican American later this year.
But Tyson, who was beaten by Buster Douglas in the biggest upset ever in 1990, wants Joshua to be sure his head is in the right place before facing Ruiz Jr again.
"He made a mistake, got hurt, and s*** happens," he said on his podcast.
"He can win it back though, but his mind has to be right. He ain’t gonna win it back if his mind’s f***ed up.
"His mind’s gotta be right, he’s gotta dedicate his life to doing this.
"He’s gotta stay away from himself. When we go training, we go away in the mountains, we're staying away from ourself and our thoughts.
"In the mountains away from everybody, just the animals and the woods and stuff - you’re facing your demons alone."
Tyson continued his rant and doubled down on his doubts about Joshua's mindset.
"His spirits appear well to you, but in his mind… what’s going on in his mind?," he added.
"F***. This stage in life is really what makes them.
"Because they already have money now. Now it’s all about: Who are you?
“Now you’re dealing with adversity, who are you? What are you gonna do now?
“Are you gonna lay down now? And say, ‘Hey, I don’t want no more.’
"Do you stay down and give it up? Or do you believe in it? You got any f***ing pride, n*****?
"What do you believe in? Do you believe in your ancestors? Your mother, your father, your kids? What do you believe in?
"What have you got to fight for? And then it’s up to him, I don’t believe in s*** maybe. I’ve got money.
"I don’t believe in none of this s***. And that’s cool too, if it’s not who you are."
