World light-middleweight champion Floyd Mayweather has asked fans to decide whether his next fight should be against Amir Khan or Marcos Maidana.
Briton Khan signed a deal in December that put him in line for a possible bout with the unbeaten Mayweather.
Khan, 27, has won 28 of his 31 fights, while 30-year-old Argentine Maidana has 35 victories from his 38 bouts.
Mayweather, 36, tweeted: "I'm going to let the fans vote. Tell me who I should fight next. Khan or Maidana?"
American Mayweather beat Saul Alvarez in September 2013 in the most recent of his 45 career fights.