Prisoner put on parole ultimately gets pardon (7)
I believe the answer is:
condone
'pardon' is the definition.
(both can mean to excuse wrongdoing)
'prisoner put on parole ultimately' is the wordplay.
'prisoner' becomes 'con' (abbreviation for 'convict').
'put on' becomes 'don' (as in donning or putting on an item of clothing).
'ultimately' says to take the final letters.
The final letter of 'parole' is 'e'.
'con'+'don'+'e'='CONDONE'
'gets' acts as a link.
(Other definitions for condone that I've seen before include "Turn a blind eye" , "Nod once (anag) -- make allowances for" , "Accept (wrong behaviour)" , "Overlook intentionally" , "Excuse made" .)