Writer of the cheque for a reward, possibly returned (6)
I believe the answer is:
drawer
'writer of the cheque' is the definition.
The answer and definition can be both people as well as being singular nouns.
Maybe you can see a link between them that I can't see?
'a reward possibly returned' is the wordplay.
'reward' anagrams to 'DRAWER'.
However, I'm not sure how the anagram is indicated.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for drawer that I've seen before include "Person writing cheque" , "Artist" , "neither winner nor loser?" , "One who writes cheque; storage box" , "One sliding into e.g. chest" .)