Perhaps he is link in foreign capital (8)
I believe the answer is:
helsinki
'foreign capital' is the definition.
(I've seen this before)
'perhaps he is link' is the wordplay.
'perhaps' is an anagram indicator.
'he'+'is'+'link'='heislink'
'heislink' with letters rearranged gives 'HELSINKI'.
'in' acts as a link.
(Other definitions for helsinki that I've seen before include "Main city of Finland" , "Is he link to a European city?" , "Sikh line (anag)" , "Nordic capital" , "Foreign city" .)