Muscat man (5)
I believe the answer is:
omani
'muscat man' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for omani that I've seen before include "One from Muscat" , "From an Arabian country, capital Muscat" , "Middle Easterner" , "M East person" , "Native of one Arabian sultanate" .)