Dance impressing his fancy man (6)
I believe the answer is:
bishop
'man' is the definition.
(I know that Bishop is a type of chess piece)
'dance impressing his fancy' is the wordplay.
'dance' becomes 'bop' (bopping is a kind of dancing).
'impressing' indicates putting letters inside (impress historically meant to conscript).
'fancy' indicates anagramming the letters.
'his' anagrammed gives 'ish'.
'bop' placed around 'ish' is 'BISHOP'.
(Other definitions for bishop that I've seen before include "see supervisor" , "Church leader" , "Chesspiece which moves diagonally" , "Senior clergyman" , "Chess piece; mulled wine" .)