While Parker remains on the card and will now fight Martin Bokole, Dubois will watch from the sidelines but could make a swift return in the next two or three months according to his promoter Warren.
A fight with Usyk could see Dubois challenge to become the undisputed heavyweight champion and the Ukrainian appeared to be keen for the fight as well.
Dubois was set to make his second defence of his IBF world title against Parker on Saturday as part of a stacked card in Saudi Arabia headlined by the eagerly anticipated rematch between Artur Beterbiev and Dmitry Bivol.
Frank Warren revealed the two opponents Daniel Dubois will turn his attention towards after being forced to pull out of his fight with Joseph Parker.
Arrow MORE: Daniel Dubois illness revealed as Martin Bakole travels to fight Joseph Parker.
