Small amount of money for bouquet (5)
I believe the answer is:
scent
'bouquet' is the definition.
(the scent of a wine)
'small amount of money' is the wordplay.
'small' becomes 's' (abbreviation - e.g. clothes size).
'amount of money' becomes 'cent' (type of coin).
's'+'cent'='SCENT'
'for' is the link.
(Other definitions for scent that I've seen before include "Distinctive smell" , "Distinctive odour" , "Distinctive aroma" , "Pleasant smell" , "Get wind of" .)