Arrives to entertain revolutionary bowman (6)
I believe the answer is:
archer
'bowman' is the definition.
('archer' can be a synonym of 'bowman')
'arrives to entertain revolutionary' is the wordplay.
'arrives' becomes 'arr' (I've seen this in other clues).
'to entertain' is an insertion indicator.
'revolutionary' becomes 'che' (Che Guevara the Marxist revolutionary).
'arr' placed around 'che' is 'ARCHER'.
(Other definitions for archer that I've seen before include "Arrows one sends" , "ex-con" , "Jeffrey, bowman?" , "part of circle woman's joined" , "His weapon is the bow" .)