Tidy profit? (5,2)
I believe the answer is:
clean up
This clue is a double definition.
'tidy' is the first definition.
('clean up' can be a synonym of 'tidy')
'profit?' is the second definition.
(I've seen this before)
(Other definitions for clean up that I've seen before include "Put in order - gain financially" , "Make a great profit" , "emulate Bowdler" , "Thorough decontamination" , "free of filth" .)