Foolishly presenting pearl to investor (8,7)
I believe the answer is:
sleeping partner
'investor' is the definition.
(type of investor)
'foolishly presenting pearl' is the wordplay.
'foolishly' indicates an anagram.
'presenting'+'pearl'='presentingpearl'
'presentingpearl' is an anagram of 'SLEEPING PARTNER'.
'to' acts as a link.
(Other definitions for sleeping partner that I've seen before include "silent in company?" , "Inactive business associate" , "One not known" , "A capital provider" .)