Arranged to have eaten about nine (5)
I believe the answer is:
fixed
'arranged' is the definition.
(I've seen this before)
'eaten about nine' is the wordplay.
'eaten' becomes 'fed' ('feed' can be a synonym of 'eat').
'about' is an insertion indicator.
'nine' becomes 'IX' (roman numeral).
'fed' going around 'ix' is 'FIXED'.
'to have' acts as a link.
(Other definitions for fixed that I've seen before include "Repaired" , "Arranged" , "Securely fastened" , "Set" , "Established" .)