The pair of champions unify all four belts for the first time in heavyweight history on February 17 in Saudi Arabia.
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Fury is coming off the back of knockout wins over Deontay Wilder, Dillian Whyte and Derek Chisora.
But he was floored by ex-UFC star Francis Ngannou, 37, and deemed fortunate to walk away with a points win in their October bout.
So dad John wants to see a change in Fury’s tactics in order to nullify masterful southpaw Usyk.
And he pointed to Michael Spinks’ 1987 win over the giant Gerry Cooney as warning to why.
He told Boxing Social: “He needs a different style altogether with Usyk, he’s totally different.
“If you go back to, many years ago, you can watch it on the internet, it’s Gerry Cooney-Michael Spinks.
“Michael Spinks is a blown-up light-heavyweight weighing just over fourteen stone at the time.
“Gerry Cooney is six-foot-seven, eighteen stone, look what happened.
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TYSON FURY VS OLEKSANDR USYK: ALL THE DETAILS YOU NEED AHEAD OF HUGE UNDISPUTED HEAVYWEIGHT BOUT
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“These are speed-men, you just can’t have that straight-up, going forward, looking to land a bomb on these kind of fighters because guess what?
“They can see it coming and they will avoid it.
“Usyk is very good, he is a good mover, he’s got a brain, he’s got good footwork and the style for Deontay Wilder and Francis Ngannou isn’t going to cut it for a man like Usyk.”
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