Theatre role coming up for hunter (7)
I believe the answer is:
trapper
'hunter' is the definition.
(trapper is a kind of hunter)
'theatre role coming up' is the wordplay.
'theatre' becomes 'rep' (I've seen this in other clues).
'role' becomes 'part' ('part' can be a synonym of 'role').
'coming up' says the letters should be written in reverse.
'rep'+'part'='reppart'
'reppart' reversed gives 'TRAPPER'.
'for' acts as a link.
(Other definitions for trapper that I've seen before include "One seeking fur" , "One who catches animals for their fur" , "Kit Carson, for example" , "Kit Carson, say" , "Catcher of wild animals" .)