Expert insight for furnishing (9)

I believe the answer is:

provision

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'for furnishing' is the definition.
(thesaurus)

'expert insight' is the wordplay.
'expert' becomes 'pro' (short for professional).
'insight' becomes 'vision' (I can't justify this - if you can you should believe this answer much more).
'pro'+'vision'='PROVISION'

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(Other definitions for provision that I've seen before include "facilities" , "Keep supplied" , "Something supplied" , "Catering" , "Supply; condition" .)

I've seen this clue in The Guardian.

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