Foreigner who got back again into Spain, somehow (7)
I believe the answer is:
persian
'foreigner who' is the definition.
The answer and definition can be both people as well as being singular nouns.
Perhaps you can see a link between them that I can't see?
'back again into spain somehow' is the wordplay.
'back' says the letters should be written backwards.
'again' becomes 're' (prefix meaning 'again').
'into' is an insertion indicator.
'somehow' indicates anagramming the letters.
're' reversed gives 'er'.
'spain' anagrammed gives 'psian'.
'er' placed inside 'psian' is 'PERSIAN'.
'got' is the link.
Can you help me to learn more?
(Other definitions for persian that I've seen before include "Breed of cat" , "Long-haired cat" , "Iranian language" , "Type of cat or carpet" , "From Iran?" .)