Former lover I left, meeting European in bar (5)
I believe the answer is:
Here is my best explanation:
'bar' is the definition.
'former lover i left meeting european' is the subsidiary indication.
'former lover' becomes 'ex'.
'left' becomes 'l' (common abbreviation**).
'meeting' is a charade indicator (letters next to each other).
'european' becomes 'e' (abbreviation e.g. EU).
'in' is the link.
(Other definitions for exile that I've seen before include "One barred from their native land", "Expatriate", "Banish; expel", "Overseas banishment", "Ousted person", "One expelled (from their native country)", "Person expelled from home country", "Refugee", "Eject from country" and "Drive out".)