More than willing to agree, maybe (5)
I believe the answer is:
eager
'more than willing' is the definition.
(I've seen this in another clue)
'agree maybe' is the wordplay.
'maybe' indicates an anagram.
'agree' anagrammed gives 'EAGER'.
'to' acts as a link.
(Other definitions for eager that I've seen before include "Keen, avid" , "Swiss mountain" , "Enthusiastic, avid" , "Enthusiastic, raring to go" , "Sharp" .)