A refusal in Paris will be coming soon (4)
I believe the answer is:
anon
'coming soon' is the definition.
'a refusal in paris' is the wordplay.
'refusal in paris' becomes 'non' ('no' in French).
'a'+'non'='ANON'
'will be' acts as a link.
(Other definitions for anon that I've seen before include "Soon, shortly (archaic)" , "Of unknown name (abbr)" , "Nameless (abbr.); soon" , "Without known author" , "soon to be written" .)