Oscar runs banks in part of France (7)

I believe the answer is:

orleans

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'part of france' is the definition.
(I know that Orleans is part of France)

'oscar runs banks' is the wordplay.
'oscar' becomes 'O' (phonetic alphabet: alpha, bravo, charlie etc.).
'runs' becomes 'r' (cricket abbreviation).
'banks' becomes 'leans' (I can't explain this - if you can you should give a lot more credence to this answer).
'o'+'r'+'leans'='ORLEANS'

'in' is the link.

Can you help me to learn more?

(Other definitions for orleans that I've seen before include "European city" , "French city on the Loire" , "It's New in Louisiana" , "material" , "City of north-central France" .)

I've seen this clue in The Telegraph.

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