Wandering Croat, this player? (5)
I believe the answer is:
actor
'this player?' is the definition.
('actor' can be a synonym of 'player')
'wandering croat' is the wordplay.
'wandering' is an anagram indicator.
'croat' is an anagram of 'ACTOR'.
(Other definitions for actor that I've seen before include "One on stage" , "Thespian, stage performer" , "Croat (anag.)" , "Theatrical player" , "Film star" .)