Muslimović signed his first professional contract with Udinese. During the 2004–05 season, he was the top scorer of &lt;a href="Serie%20C1/A"&gt;Serie C1/A&lt;/a&gt; side Rimini, with 15 goals in 32 matches, helping his team in winning the league and being promoted to Serie B. In 2006–07 he was loaned to Parma. In June 2007, he signed for Serie A side Atalanta (in a direct swap with Marco Motta) but suffered from lack of playing time under head coach Luigi Delneri.