File photo dated 22-05-1966 of World heavyweight champion Muhammad Ali (Cassius Clay) bends an ear to listen to the sound that all professional boxers like to hear, the promoter (Harry Levene) giving the gross figure of their latest fight. Issue date: Saturday June 4, 2016. Muhammad Ali - 'The Greatest' - has died aged 74. See PA story BOXING Ali. Photo credit should read PA/PA Wire.