The most common and most likely answer to this crossword clue is the 8 letter word DEPORTED
I've seen this crossword clue in The Sunday Telegraph
D
E
P
O
R
T
E
D
Buddy explains!

The straight part
We know that "sent to another country" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case sent to another country = deported.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does DEPORTED mean?
DEPORTED verb- To comport (oneself); to behave.
- To evict, especially from a country.