Soon to get a Gallic negative (4)
I believe the answer is:
anon
'soon' is the definition.
(synonyms)
'get a gallic negative' is the wordplay.
'get' means one lot of letters go next to another.
'gallic negative' becomes 'non' (similar in meaning. I am not sure about the 'gallic' bit.).
'a'+'non' is 'ANON'.
'to' is the link.
Can you help me to learn more?
(Other definitions for anon that I've seen before include "devoid of credit" , "Soon, precious stone" , "Not identified by name" , "Some time soon" , "soon to be written" .)