Pulling directors to square one (7,5)
I believe the answer is:
drawing board
'square one' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps there's a link between them I don't understand?
'pulling directors' is the wordplay.
'pulling' becomes 'drawing' (drawing is a kind of pulling).
'directors' becomes 'board' (board of directors).
'drawing'+'board'='DRAWING-BOARD'
'to' is the link.
Can you help me to learn more?
(Other definitions for drawing board that I've seen before include "Flat draughtsman's surface (often gone back to)" , "Something to go back to when stuck" , "Back to it, for complete rethink" , "Planning stage of project" , "One may have to go back to it" .)