A legal right for someone from abroad (5)
I believe the answer is:
alien
'someone from abroad' is the definition.
(alien can mean a foreigner)
'a legal right' is the wordplay.
'legal right' becomes 'lien' (I've seen this before).
'a'+'lien'='ALIEN'
'for' acts as a link.
(Other definitions for alien that I've seen before include "of foreigners" , "immigrant" , "Little green man, perhaps" , "Not native" , "Creature from another planet" .)