Coincide; concur (5)
I believe the answer is:
agree
This clue is a double definition.
'coincide' is the first definition.
(I've seen this in another clue)
'concur' is the second definition.
(synonyms)
(Other definitions for agree that I've seen before include "Consent required" , "Accept" , "Give consent" , "Accord, match" , "Say yes to a suggestion" .)