In time, about to come to same conclusion (5)
I believe the answer is:
agree
'come to same conclusion' is the definition.
I can't judge whether this defines the answer.
'in time about' is the wordplay.
'in' is an insertion indicator.
'time' becomes 'age' (an age is a period of time).
'about' becomes 're' ('re' means regarding or about).
'age' enclosing 're' is 'AGREE'.
'to' is the link.
Can you help me to learn more?
(Other definitions for agree that I've seen before include "Think alike" , "get on" , "Go along with" , "Have the same opinion" , "Have the same idea" .)