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It is this injury and a bacterial chest infection which prompted Tommy to pull out of the fight with Paul on 18th December.
Fury Senior recounted the incident, which saw the "16 or 17 stone man" punch his son in the ribs during an interview with Behind The Gloves.
He said: "A man of 16 or 17 stone with his bare knuckle, punched him in the ribs and broke his ribs.
"At the end of the day, I was horrified, we were going to try and battle through it, because when we got him x-rayed they said, 'No, it's just bruised, it's ligament damage'.
"And then, he was sparring and he couldn't throw a punch, he couldn't move. He said, 'Look, I'm in bad pain dad'.
"He said to Tyson, 'I'm in bad pain, I can't move'. So, I took him to a specialist in Manchester, they x-rayed him properly and the finding was there.
"Broke ribs, what can you do? Chest infection, broke ribs, it's unfortunate, it's cost a lot of money, people have lost a lot of money, the disappointment is immense for Tommy and us."
But the Fury camp insist that a date to reschedule the fight will be agreed, as the bad blood between the pair is settled in the ring.
Paul has made an impressive start to his boxing career, after beating fellow YouTuber, 'AnEsonGib', ex-NBA star Nate Robinson and former welterweight, Ben Askren.
But arguably his crowning glory came with an eight-round victory over ex-UFC champion, Tyron Woodley in August.
Meanwhile, Fury boasts a record of seven wins and no losses so far, and most recently beat Anthony Taylor with a unanimous decision in the fourth round.