The New Zealand Professional Boxing Association heavyweight title will remain vacant if Clarence Tillman beats Sonny Bill Williams.
Tillman, an American, has a New Zealand work permit but is not yet a resident, which makes him ineligible for the title to be contested at Claudelands Arena in Hamilton on February 8.
Pat Leonard, the national secretary of the NZPBA, yesterday confirmed the eligibility issue but added Tillman would be welcome to challenge for the title if he became a resident.
Leonard said if that was the case his opponent would probably be Joey Wilson, a 32-year-old from Auckland who beat Tillman in a split decision over six rounds in 2010.
Tillman, 34, is a late change of opponent for Williams after it was revealed to fight promoters that Richard Tutaki was facing serious charges including possession of methamphetamine and drug utensils.