Hoffman - possibly nudist! (6)
I believe the answer is:
dustin
'hoffman' is the definition.
(Dustin Hoffman)
'possibly nudist' is the wordplay.
'possibly' is an anagram indicator.
'nudist' with letters rearranged gives 'DUSTIN'.
(Other definitions for dustin that I've seen before include "Fellow" , "Mr Hoffman" , "- - Hoffman (actor)" .)