Subject of some bargaining (4)
I believe the answer is:
plea
'subject of some bargaining' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for plea that I've seen before include "Earnest request, prayer" , "Excuse, entreaty" , "Defendant's answer to a charge or claim" , "Negotiation between prosecutor and defendant" , "(and 14) Enjoyment - gratification" .)