Britain's Fury and Parker clash in Manchester on September 24.
The British Boxing Board of Control (BBBoC) has appointed British referee Terry O'Connor - the same official in charge of Hughie Fury's last two bouts - to control the fight.
"We're frankly appalled by this. We have petitioned the BBBoC multiple times to see sense, but to no avail. Serious questions need to be asked of the BBBoC," Duco Events director David Higgins said on Thursday.
