John Fury has blasted his son Tyson’s game plan against Francis NgannouCredit: TNT Sports

Fury won on a narrow split decision in the crossover boutCredit: Getty

But Fury’s shaky performance cast doubt on his credentials to beat Oleksandr Usyk when they fight in February.

And John has told his son in no uncertain terms to change tactics or face losing his WBC title.

Speaking to the Mail via Free Bets UK, he said: “There was a lot wrong with it.

“His physical condition could have been a lot better. The game plan – there wasn’t one. At the end of the day, he does his thing again. But it could have been a lot better.

“For my money, he hadn’t trained the way he should have done for that fight and I don’t mean physically, I mean a game plan.

“His game plan should have been box and move be clever, be witty, outsmart him, but what happened? He tried to break a ten-tonne bulldozer with a toffee hammer.

“Tyson, he looked fat thin to me. His condition, his body didn’t look right from the off. He was somewhere else, Tyson. I don’t know whether he couldn’t get up for the fight.

“That wasn’t Tyson in there. He still does enough to win. He won the fight no matter what people think, but he made it difficult for himself with that game plan. It was f***ing stupid basically.

“You don’t meet an express train head on, do you? On the ability Tyson’s got, he should have trained for the back foot, slipping and sliding, the same style for when he fought Wladimir Klitschko.

“Then he would have made Ngannou look silly and he would have run out of ideas.”

John has openly criticised Tyson’s trainer SugarHill Steward.

He also said he had seen a decline in Tyson’s condition over his last three fights and said he is unsure whether he would be ready for the February 17th.

The 59-year-old said: “In my opinion, Tyson needs a bit more time to get his conditioning right and his weight right.

“For me it looked like he had lost 20lbs of muscle last time. Something was wrong.”