Divorcee, cunning, returned bonus (5)
I believe the answer is:
extra
'bonus' is the definition.
(I've seen this before)
'divorcee cunning returned' is the wordplay.
'divorcee' becomes 'ex' (I've seen this in other clues).
'cunning' becomes 'art' (both can mean artfulness or trickery).
'returned' is a reversal indicator.
'art' backwards is 'tra'.
'ex'+'tra'='EXTRA'
(Other definitions for extra that I've seen before include "Run scored but not off the bat" , "Additional - bye" , "Superfluous" , "wide? It could be" , "(Theatrical) spear carrier" .)