Players missing include defensive stalwarts Igor Tudor of Juventus and Bayern Munich's RobertKovac, top scorer Davor Suker, now with 1860 Munich, and Middlesbrough striker Alen Boksic.
Simunic, who has looked strong since his international debut in November last year, is joined in defence by two other Bundesligas players, Bayern Munich's RobertKovac and Bayer Leverkusen's Boris Zivkovic.