I'm a fan of David Beckham.
I'm a fan of David Beckham's.
Which is the correct sentence?
a business partner of my father = a business partner that my father is dealing with (expressing co-operation)
a business partner of my father's = my father has got a business partner (expressing a kind of 'possesion')
I am a fan of David Beckham. = I am a fan interested in David Beckham's life as a whole
I am a fan of David Beckam's. = David Beckham has got many fans, including me; I am one of his (David Beckham's) fans