Agree a fixture (5)
I believe the answer is:
match
I believe this is a double definition.
'agree' is the first definition.
(I know that agree can be written as match)
'a fixture' is the second definition.
(sporting fixture)
(Other definitions for match that I've seen before include "Marriage; game" , "Stick in a box?" , "Suit; fixture" , "Game - pairing - lucifer" , "tie" .)