A commanding central defender, Stefanovic possess great aerial ability, is strong in the tackle and a good reader of the game. He is able to play at fullback or in the centre of defence, both positions he has occupied for his country on no less than 19 occasions.
Stefanovic joined Portsmouth during the summer of 2003 on a three-year deal.
Stefanovic is already familiar with the English game, having played for Sheffield Wednesday while they were in the Premiership between 1995 and 1999. Before that, he had started his career in what was Yugoslavia, with Red Star Belgrade.