Aussie banker reckless about pound (7)
I believe the answer is:
darling
'aussie banker' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe you can see a link between them that I don't see?
'reckless about pound' is the wordplay.
'reckless' becomes 'daring' (I've seen this before).
'about' indicates putting letters inside.
'pound' becomes 'l'.
'daring' enclosing 'l' is 'DARLING'.
Can you help me to learn more?
(Other definitions for darling that I've seen before include "Australian tributary of the Murray River, sweetheart" , "family in play" , "Term of affection" , "Victorian heroine" , "Adorable - honeybun" .)