 Complete the following phrase:  At A.C. Milan, Šimić was immediately made a member of the first-team squad under Carlo Ancelotti, who changed Šimićs playing position from centre back to right back in a four-men defensive line. His debut for AC Milan came in a 200203 Champions League third qualifying round away game against Slovan Liberec on 28 August 2002. Šimić went on to make 12 appearances for AC Milan in their run to the UEFA Champions League title in 2003, though he was omitted from both semi-final legs against Inter and the 