Phillip Schofield's ex-lover is said to be able to "have his say" in the ITV probe amid claims he denied the affair.
The young runner, who is now in his twenties, is set to be quizzed by independent barrister Jane Mulcahy KC following his relationship with the former This Morning star.
It comes as part of ITV's external investigation into the scandal after Phillip quit both the show and broadcaster when he admitted to having an "unwise" but "not illegal" affair.