One night in Paris for northerner (5)
I believe the answer is:
inuit
'northerner' is the definition.
(I've seen this before)
'one night in paris' is the wordplay.
'one' becomes 'i' (Roman numeral).
'night in paris' becomes 'nuit' ('night' in French).
'i'+'nuit'='INUIT'
'for' acts as a link.
(Other definitions for inuit that I've seen before include "Northerner" , "found in Greenland" , "Arctic natives" , "Dweller in the far north" , "people from northern Canada" .)