Amir Khan says Floyd Mayweather 'is scared'

Britain's Amir Khan says Floyd Mayweather "is scared" of fighting him after the American opted to face Andre Berto on 12 September.

Khan had hoped for a September bout with Mayweather, 38, after beating Chris Algieri in June.

Khan thought he was close to securing a meeting with the sport's pound-for-pound king after his success over American fighter Algieri and Mayweather's unanimous points victory over Manny Pacquiao in their lucrative meeting in May.