Having done, he's said to want paying (3)
I believe the answer is:
dun
'having done he's said to want paying' is the definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.
This is the entire clue.
Can you help me to learn more?
(Other definitions for dun that I've seen before include "Pursue or badger for debt" , "Press for payment" , "Dingy brown" , "Dull brownish-grey colour" , "nag, for payment" .)