Son with money for bouquet (5)
I believe the answer is:
scent
'bouquet' is the definition.
(the scent of a wine)
'son with money' is the wordplay.
'son' becomes 's' (genealogical abbreviation for son).
'with' means one lot of letters go next to another.
'money' becomes 'cent' (eg denomination of dollars).
's'+'cent'='SCENT'
'for' acts as a link.
(Other definitions for scent that I've seen before include "Whiff" , "Distinctive odour" , "Number of clues" , "Pleasant smell" , "Track; aroma" .)