Three quarters of strategy rearranged in turn (6)
I believe the answer is:
gyrate
'turn' is the definition.
(I know that gyrate is a more specific form of the action turn)
I don't understand how the remainder of the clue works.
(Other definitions for gyrate that I've seen before include "Move quickly in a spiral" , "Revolve, whirl" , "Move in a circle or spiral" , "Spin at speed" , "Turn" .)