New aim – to leave mate abroad (5)
I believe the answer is:
amigo
'mate abroad' is the definition.
'amigo' can be an answer for 'mate' (I've seen this in another clue). I'm not certain of the 'abroad' bit.
'new aim to leave' is the wordplay.
'new' is an anagram indicator.
'to leave' becomes 'go' (both can mean to depart).
'aim' anagrammed gives 'ami'.
'ami'+'go'='AMIGO'
Can you help me to learn more?
(Other definitions for amigo that I've seen before include "Pal from Madrid?" , "A Mexican pal" , "Quixote's friend" , "friend in Uruguay" , "Mexican's mate" .)