Man appearing in bazaar once (5)
I believe the answer is:
aaron
'man' is the definition.
(I've seen this before)
'in bazaar once' is the wordplay.
'in' indicates a hidden word.
'AARON' is hidden in the letters of 'bazaar once'.
'appearing' is the link.
(Other definitions for aaron that I've seen before include "Brother of Moses and traditional founder of Jewish priesthood" , "high priest" , "Brother of Moses who had blessed rod" , "Brother of Moses, led the Jews to the Promised Land" , "Boy" .)