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' placed around 'ix' is 'FIXED'.
'to have' is the link.
(Other definitions for fixed that I've seen before include "Repaired" , "Arranged" , "Securely fastened" , "Set" , "Established" .)