Not seeing eye to eye (2,4)
I believe the answer is:
at odds
'not seeing eye to eye' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for at odds that I've seen before include "On bad terms" , "In disagreement or conflict - like bookies?" , "At variance (with)" , "Disagreeing" , "Conflicting (with)" .)