Tyson Fury has been given just one week to sign up to WBC random drug testing or he will not fight Deontay Wilder for a world title.
The heavyweight pair collides on December 1 at the Staples Center in Los Angeles - but Fury is yet to enrol in the WBC Clean Boxing Program.
The Voluntary Anti-Doping Association oversees the programme and ensures all boxers are eligible to fight in the WBC.