Reportedly excluded writer (4)
I believe the answer is:
bard
'writer' is the definition.
(bard is a kind of writer)
'reportedly excluded' is the wordplay.
'reportedly' shows a homophone (sound like).
'excluded' becomes 'barred' ('bar' can be a synonym of 'exclude').
'barred' sounds like 'BARD'.
(Other definitions for bard that I've seen before include "Shakespeare" , "Epic poet" , "Poet; sounds like forbidden" , "Eisteddfod winner" , "A lyric poet" .)