Arrange again (7)
I believe the answer is:
reorder
'arrange again' is the definition.
('order' can be a synonym for 'arrange' so perhaps 'reorder' is OK for 'arrange again')
This is all the clue.
(Other definitions for reorder that I've seen before include "make new disposition" , "Request for further supply" , "Arrange afresh" , "marshal over" , "Send off again for" .)