Arab retiring very soon (5)

I believe the answer is:

omani

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'arab' is the definition.
(someone from Oman)

I don't understand the remainder of the clue.

(Other definitions for omani that I've seen before include "M East person" , "Speaker of Arabic" , "Inhabitant of Middle Eastern sultanate" , "Citizen of a country, capital Muscat" , "Gulf native" .)

I've seen this clue in The Times and The Sunday Times.

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