I agree to listen to judge (4,4)
I believe the answer is:
hear hear
'i agree' is the definition.
('hear hear' is said to indicate agreement)
'listen to judge' is the wordplay.
'listen to' becomes 'hear' (to hear something is to listen to it).
'judge' becomes 'hear' (as in to hear a court case).
'hear'+'hear'='HEAR HEAR'
'to' acts as a link.
(Other definitions for hear hear that I've seen before include "Exclamation of approval" , "Expression of whole-hearted agreement" , "That's right" , "Enthusiastic expression of agreement" , "Agreed" .)