Crossword Genius

They fancy they're resourceful (3,2,5)

Ross

I believe the answer is:

men of ideas

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

'resourceful' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.

'they fancy' is the wordplay.
I cannot quite see how this works, but
'fancy' could be 'idea' (I've seen this before) and 'idea' is located in the answer.
This explanation may well be incorrect...

'they're' is the link.

Can you help me to learn more?

I've seen this clue in The Globe and Mail.
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