A fighter, old ally abroad (5)

I believe the answer is:

amigo

'ally abroad' is the definition.
('friend' in Spanish)

'a fighter old' is the wordplay.
'fighter' becomes 'mig' (fighter jet produced by Russian company MiG).
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'a'+'mig'+'o'='AMIGO'

(Other definitions for amigo that I've seen before include "friend abroad" , "Pal from Madrid?" , "China (in Spain's view)" , "friend from Barcelona" , "buddy abroad?" .)

I've seen this clue in The Times.

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