Frustrated Amir Khan calls out Floyd Mayweather

Amir Khan has set Floyd Mayweather a five-day deadline as he attempts to line up a fight against the pound-for-pound king.

Khan has long been seeking the clash and enhanced his claims for a shot at the undefeated American with a convincing win over Devon Alexander in December.

Khan had previously pulled out of a prospective fight against Alexander because he thought he had landed Mayweather, only for the 37-year-old to chose Marcos Maidana as his opponent. That came after Mayweather had asked fans on Twitter to vote on whether he should face Khan or Maidana, with Khan coming out the winner.