Reportedly inexperienced novelist (6)
I believe the answer is:
greene
'novelist' is the definition.
(I've seen this before)
'reportedly inexperienced' is the wordplay.
'reportedly' shows a homophone (sound like).
'inexperienced' becomes 'green' ('green' can be similar in meaning to 'inexperienced').
'green' is a homophone of 'GREENE'.
(Other definitions for greene that I've seen before include "Graham -, English author (Brighton Rock)" , "Graham -, English novelist" , "Graham --, Eng. author" , "See 13" , "writer" .)