Guy to miss start of march taking place soon (4)
I believe the answer is:
anon
'soon' is the definition.
(I've seen this before)
'guy to miss start of march taking place' is the wordplay.
I cannot really understand how this works, but
'of' could be 'o' and 'o' is found in the answer.
The remaining letters 'ann' is a valid word which might be clued in a way I don't understand.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for anon that I've seen before include "Soon or presently" , "Soon, shortly (archaic)" , "Soon, in a little while" , "Having no known name" , "Writer unknown" .)