Creator? Not now (6)
I believe the answer is:
former
I believe this clue is a double definition.
'creator?' is the first definition.
(the person who created or formed something)
'not now' is the second definition.
(Other definitions for former that I've seen before include "Ex-" , "The first mention of the two" , "Of an earlier period, or mentioned before another" , "Old < prior < departed" , "Core for winding an electrical core" .)