Plan to squander and run off (9)
I believe the answer is:
blueprint
'plan' is the definition.
(blueprint is a kind of plan)
'squander and run off' is the wordplay.
'squander' becomes 'blue' (blue can mean to waste or squander).
'and' is a charade indicator (letters next to each other).
'run off' becomes 'print' (I've seen this before).
'blue'+'print'='BLUEPRINT'
'to' is the link.
(Other definitions for blueprint that I've seen before include "Prototype" , "Formula" , "Original design" , "Design or guide for making something" , "Design plan" .)