Repay debt in full and move on (5,3)
I believe the answer is:
clear off
I believe this clue is a double definition.
'repay debt in full' is the first definition.
(clear a debt completely)
'move on' is the second definition.
(clear off can mean to leave or go away)
'and' is the link.
(Other definitions for clear off that I've seen before include "Get lost!" , "Skedaddle" , "Go away - transparently" , "Begone (colloq.)" , "Leave" .)