Cravats on unconventional site (4)
I believe the answer is:
ties
'cravats' is the definition.
(I've seen this in another clue)
'unconventional site' is the wordplay.
'unconventional' indicates anagramming the letters.
'site' is an anagram of 'TIES'.
'on' acts as a link.
(Other definitions for ties that I've seen before include "allegiances" , "Links" , "Items of neckwear" , "Connects" , "Fastens with a knot" .)