If a prisoner is on parole, he or she is released before the official end of their prison sentence and will not be sent back to prison if their behaviour is good.
If released, he will continue to be on parole for eight more years.
See full dictionary entry for parole
on parole in British English
a.
conditionally released from detention
b. informal
(of a person) under scrutiny, esp for a recurrence of an earlier shortcoming
See full dictionary entry for parole
on parole in American English
at liberty under conditions of parole
See full dictionary entry for parole
Examples of 'on parole' in a sentence
on parole
Police chiefs fear that is too weak a deterrent to dealers, who know they will be out on parole within five years.
The Sun (2011)
And second, we need to reform the law on parole so that prison sentences actually mean what they say - not half of what they say.