About ready to flip, if ditched in canal (9)

I believe the answer is:
financial
'about ready' is the definition.
Although both the answer and definition are adjectives, I don't understand how they can define each other.
'flip if ditched in canal' is the wordplay.
I cannot quite understand how this works, but
'in' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
'to' acts as a link.
Can you help me to learn more?
(Other definitions for financial that I've seen before include "Relating to money" , "Involving money" , "Monetary" , "Regarding money supply" , "Fiscal" .)
