Duran was unable to travel for the fight so Frank Hopkins has replaced him.
Tyson Fury will face Dillian Whyte to defend his title as world heavyweight champion on 23 April
According to the Mirror, Frank Warren, a promoter of Fury, recommended Hopkins to Fury.
Duran witnessed Deontay Wilder beat Fury twice since Fury changed to SugarHill Steward as Fury's American trainer.
The legendary cutman will not be present during the British boxer's fight with Whyte in the UK on 23 April.
Hopkins' ringside reputation was built while he watched Tony Oakley rise to stardom.
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The former boxer was helped by the Portsmouth-born cornerman over his 12 year career.
Hopkins has participated in 36 world title fights, but none as important as the Fury-Whyte battle at Wembley.
The arena will be packed with 94,000 people, according to the organizers.
Fury's famously brutal cut against Otto Wallin, a Swedish boxer, in 2019 nearly ended his undefeated record. He was forced to fight for the next nine rounds with the injury.
Get a PS10 Bonus with 100s of Games to Play and No Deposit RequiredWallin ultimately lost to Fury in unanimous decision. This was his only loss so far in his career.
Since his win against Francesco Pianeta, Fury has not thrown a punch at a UK ring since 2018.
