Arrange to get rid (7)
I believe the answer is:
dispose
I believe this is a double definition.
'arrange' is the first definition.
(thesaurus)
'get rid' is the second definition.
(I've seen this before)
'to' acts as a link.
(Other definitions for dispose that I've seen before include "make an arrangement" , "Incline" , "Place in order; bestow" , "Arrange (in order)" , "Spies do (anag) - get rid of" .)