In agreement to make amends (5)
I believe the answer is:
atone
I believe this is a double definition.
'in agreement' is the first definition.
(I've seen this in other clues)
'make amends' is the second definition.
(thesaurus)
'to' acts as a link.
(Other definitions for atone that I've seen before include "remedy" , "Make amends, being at one" , "Make redress" , "Expiate" , "In agreement - sounds singular" .)