Man, say, in Paisley (4)
I believe the answer is:
isle
'man say' is the definition.
(Isle of Man)
'in paisley' is the wordplay.
'in' indicates the answer is hidden within the clue.
'ISLE' can be found hidden inside 'paisley'.
(Other definitions for isle that I've seen before include "-- of Ely, Dogs, Man" , "Dogs, for example" , "See 11 Across" , "what Donne implied he wasn't" , "Christmas or Easter, perhaps" .)