Woollen coat to take to the cleaners (6)
I believe the answer is:
fleece
I believe this clue is a double definition.
'woollen coat' is the first definition.
(I've seen this before)
'take to the cleaners' is the second definition.
(both can mean to cheat or defraud)
'to' acts as a link.
(Other definitions for fleece that I've seen before include "coat is needed" , "Sheepskin - rook" , "Woolly coat of a sheep" , "Outer coat of sheep" , "Diddle" .)