Unemployed crew with mischievous potentialities (4,5)

I believe the answer is:

idle hands

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'mischievous potentialities' is the definition.
The definition suggests a plural noun which matches the answer.

'unemployed crew' is the wordplay.
'unemployed' becomes 'idle' (associated in meaning).
'crew' becomes 'hands' (I've seen this in another clue).
'idle'+'hands'='IDLE HANDS'

'with' acts as a link.

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(Another definition for idle hands that I've seen is " 'The devil finds work for . . . . . . . . .'".)

I've seen this clue in The Guardian, The Globe and Mail and The Irish Independent.

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