Move to employ international flyer (6)
I believe the answer is:
budgie
'flyer' is the definition.
(something which flies)
'move to employ international' is the wordplay.
'move' becomes 'budge' (budging is a kind of moving).
'to employ' is an insertion indicator.
'international' becomes 'i' (abbreviation eg in IMF).
'budge' placed around 'i' is 'BUDGIE'.
(Other definitions for budgie that I've seen before include "Pet bird (abbr)" , "Pet cage-bird from Australia" , "Cage-bird from Australia, in brief" , "Small colourful cage bird, in brief" , "Common Australian cage-bird" .)