Pilot quietly longing for somewhere to trade, unofficially (8)

I believe the answer is:

flypitch

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'somewhere to trade unofficially' is the definition.
I don't know anything about this answer so I cannot tell whether it can be defined by this definition.

'pilot quietly longing' is the wordplay.
'pilot' becomes 'fly' (synonyms).
'quietly' becomes 'p' (p for piano and quiet).
'longing' becomes 'itch' (itch can mean a desire or longing).
'fly'+'p'+'itch'='FLYPITCH'

'for' is the link.

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I've seen this clue in The Times.

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