Told Rod Reed to reform (7)
I believe the answer is:
ordered
'told' is the definition.
('order' can be a synonym of 'tell')
'rod reed to reform' is the wordplay.
'to reform' is an anagram indicator.
'rod'+'reed'='rodreed'
'rodreed' with letters rearranged gives 'ORDERED'.
(Other definitions for ordered that I've seen before include "Told" , "Requisitioned" , "Regulated" , "Settled, tidy" , "Gave instruction, commanded" .)