Put together clothes knight can be seen in (4)
I believe the answer is:
knit
'put together' is the definition.
(I've seen this before)
'clothes knight can be seen in' is the wordplay.
'clothes' becomes 'kit' (I've seen this before).
'knight' becomes 'n' (chess abbreviation).
'can be seen in' is an insertion indicator.
'kit' placed around 'n' is 'KNIT'.
(Other definitions for knit that I've seen before include "Make a woolly" , "Link closely together" , "Unite; work wool" , "get together" , "Draw (brows) together" .)