Expert, imaginative view of supply (9)
I believe the answer is:
provision
'supply' is the definition.
(I know that provision is a more specific form of supply)
'expert imaginative view' is the wordplay.
'expert' becomes 'pro' (short for professional).
'imaginative view' becomes 'vision' (I can't explain this - if you can you should believe this answer much more).
'pro'+'vision'='PROVISION'
'of' acts as a link.
Can you help me to learn more?
(Other definitions for provision that I've seen before include "facilities" , "Catering" , "Supply; condition" , "prior measures made" , "Keep supplied" .)