Crossword Genius

Attitude underpinning footballers' wily ploy (4,3)


I believe the answer is:

mind set

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

'attitude' is the definition.
(I know that mind-set is a type of attitude)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Another definition for mind set that I've seen is " attitude!".)

I've seen this clue in The Telegraph.
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