Permit, fancy green, for traveller (9)
I believe the answer is:
passenger
'for traveller' is the definition.
(passenger is a kind of traveller)
'permit fancy green' is the wordplay.
'permit' becomes 'pass' (pass is a kind of permit).
'fancy' is an anagram indicator.
'green' anagrammed gives 'enger'.
'pass'+'enger'='PASSENGER'
(Other definitions for passenger that I've seen before include "One travelling" , "burden to the team" , "Traveller in a vehicle driven by someone else" , "Dead wood" , "Rider" .)