Banished one (8)
I believe the answer is:
deportee
'banished one' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for deportee that I've seen before include "Expelled immigrant" , "one for whom transportation is punishing" , "Expelled foreigner" , "Person sent back to land of origin" , "One ejected" .)