AFL legend to stop helping out scam (7)

I believe the answer is:

barassi

I'm a little stuck... Click here to teach me more about this clue!

'helping out scam' is the definition.
I know nothing about this answer so I can't judge whether this works.

'afl legend to stop' is the wordplay.
I cannot quite see how this works, but
'stop' could be 'bar' (bar can mean to stop or prevent) and 'bar' is found in the answer.
The remaining letters 'assi' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

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