A non-starter starting soon! (4)

I believe the answer is:

anon

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'soon' is the definition.
(synonyms)

'a non' is the wordplay.
'a'+'non'='ANON'

'starter starting' acts as a link.
This may not be correct. Some or all of it may be part of another bit of the clue.

Can you help me to learn more?

(Other definitions for anon that I've seen before include "At another time and with no identity, in short" , "Of unknown name (abbr)" , "Immediately" , "Having no known name" , "Soon; unattributed" .)

I've seen this clue in the Evening Standard.

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