Judge follows concerned with discharge (6)
I believe the answer is:
redeem
'discharge' is the definition.
(thesaurus)
'judge follows concerned with' is the wordplay.
'judge' becomes 'deem' (I've seen this before).
'follows' means one lot of letters go next to another.
'concerned with' becomes 're' (re can mean regarding, concerning).
'deem' put after 're' is 'REDEEM'.
(Other definitions for redeem that I've seen before include "Win back" , "take back pawn move" , "Recover by means of a payment" , "Save from damnation or clear debt" , "Recover from the pawnshop" .)