Devon Alexander set to take on unbeaten Shawn Porter on November 30
Devon Alexander (25-1) will make the next defence of his IBF welterweight title against undefeated American Shawn Porter (22-0-1) on November 30 in San Antonio, Texas.
This now leaves Britain's Amir Khan without a date for his mooted pre-Christmas return.
Khan and Alexander had been in protracted talks for a clash that was thought close to being finalised for either New York or Dubai.
But with Khan holding out for a fight with Floyd Mayweather in May, Alexander needed to find an opponent for his voluntary defence which is now less then seven weeks away.
Porter enjoyed a stellar amateur career and is unbeaten in 23 fights in the paid ranks with the only blemish being a draw against Khan's latest foe Julio Diaz, whom he beat decisively in a rematch only last month.
Alexander must face mandatory challenger Kell Brook following his fight with Porter, should he overcome the 25-year-old prospect.
However, Alexander, too, is hoping to secure a date with Mayweather next year and Brook would have to wait his turn if that unification fight is given the all-clear.
Also on the Texas card, Leo Santa Cruz (25-0-1) will defend his WBC super bantamweight title against Cesar Seda Jr (25-1).