Originally, Season 4 145-pound tournament winner Patricio "Pitbull" Friere was next in line but has injured his hand for a second time, making the change in title challengers necessary. Friere was originally set to battle Warren at July's Bellator 47 but broke his hand.
"Pitbull's had some problems with his hand," Rebney said. "We got him in to see the right people in Southern California. They re-looked at this hand and did another surgery recently. The prognosis is very good, but given what's occurred, he can't hit anything for 90 days."
The plan of action now is for Friere to get a shot at the winner of Warren vs. Curran during the promotion's unannounced sixth season which is expected for the spring if past seasons are any indication. The February event and location has not officially been announced.
The 24-year-old Curran earned a title shot with his 2011 Summer Series tournament victory, which saw him win three fights in two months time. Curran (16-4) also won the promotion's 155-pound tournament in 2010 and was defeated by Bellator Lightweight Champion Eddie Alvarez this past April.
Warren (7-2) has yet to defend the gold he earned in September 2010. Since that time, he's defeated Marcos Galvao in a controversial non-title unanimous decision in April and been knocked out by Alexis Vila in the opening round of Bellator's 135-pound tournament in September.