For 'Star Wars', had George a bit of luck with some casting? (5)

I believe the answer is:

lucas

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'for' is the definition.
Both the definition and answer are singular nouns.
Maybe you can see an association between them that I don't see?

I can't explain the remainder of the clue.

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(Other definitions for lucas that I've seen before include "George --, creator of Star Wars" , "George -, US film director (Star Wars)" .)

I've seen this clue in the Evening Standard.

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