Time to get friend to agree (5)
I believe the answer is:
tally
'to agree' is the definition.
('tally' can be a synonym of 'agree')
'time to get friend' is the wordplay.
'time' becomes 't' (abbreviation).
'to get' is a charade indicator (letters next to each other).
'friend' becomes 'ally' (an ally is a friend or supporter).
't'+'ally'='TALLY'
(Other definitions for tally that I've seen before include "Count up; match" , "Record; current score" , "Reckoning of a debt or of votes" , "highly?" , "Current score; agree" .)