Macron's refusal supplied to America in due time (4)
I believe the answer is:
anon
'in due time' is the definition.
(I've seen this in another clue)
'macron's refusal supplied to america' is the wordplay.
I cannot really see how this works, but
'refusal' could be 'no' (saying no to something) and 'no' is found in the answer.
'america' could be 'a' (common abbreviation - e.g. in organisation names) and 'a' is located in the answer.
A single letter 'n' remains which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for anon that I've seen before include "Of unknown name (abbr)" , "coming after a call" , "In the near future" , "Shortly; unknown" , "Without known author" .)