Follow orders! Duck out for old Ottoman governor! (3)
I believe the answer is:
bey
'ottoman governor' is the definition.
(I've seen this before)
'follow orders duck out' is the wordplay.
'follow orders' becomes 'obey' (I've seen this before).
'duck' becomes 'o' (resembles zero - 'duck' in cricket).
'out' indicates named letters should be taken away.
'obey' with 'o' removed is 'BEY'.
'for old' is the link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for bey that I've seen before include "Formerly used in Turkey and Egypt as a courtesy title" , "Turkish title" , "Ottoman governor" , "Commander" .)