Plane, for one rolling in money (4)
I believe the answer is:
loot
'money' is the definition.
(loot can mean stolen money)
'plane for one rolling' is the wordplay.
'plane for one' becomes 'tool' (plane is a kind of tool).
'rolling' says the letters should be written in reverse.
'tool' reversed gives 'LOOT'.
'in' acts as a link.
(Other definitions for loot that I've seen before include "Booty, spoils" , "Burglar's takings - pillage" , "Steal goods as spoils" , "familiar officer" , "rifle" .)