Fancy a blonde type? He is unacceptable! (6,3,4)
I believe the answer is:
beyond the pale
'unacceptable' is the definition.
(I've seen this before)
'fancy a blonde type? he' is the wordplay.
'fancy' indicates an anagram.
'a'+'blonde'+'type'+'he'='ablondetypehe'
'ablondetypehe' with letters rearranged gives 'BEYOND THE PALE'.
'is' acts as a link.
(Other definitions for beyond the pale that I've seen before include "Only understood by tanned people?" , "Totally unacceptable" , "Intolerable, unacceptable" , "to be completely colourless?" , "Not understood by untanned people" .)