Balkan native welcoming to New Englander (9)
I believe the answer is:
bostonian
'new englander' is the definition.
(Boston, Massachusetts is part of New England)
'balkan native welcoming to' is the wordplay.
'balkan native' becomes 'bosnian' (I've seen this before).
'welcoming' is an insertion indicator (in sense of 'inviting in').
'bosnian' going around 'to' is 'BOSTONIAN'.
(Other definitions for bostonian that I've seen before include "US state capitalist" , "US citizen" .)