Agree current yield (6)
I believe the answer is:
accede
'agree' is the definition.
(acceding is a kind of agreeing)
'current yield' is the wordplay.
'current' becomes 'ac' (alternating current**).
'yield' becomes 'cede' ('cede' can be a synonym of 'yield').
'ac'+'cede'='ACCEDE'
(Other definitions for accede that I've seen before include "Assent, to a demand say" , "Give one's consent" , "Allow, acquiesce" , "Consent - agree" , "Assent (to something)" .)