Munari started his career with hometown club Sassuolo, after being promoted to the senior squad from the youth team.

In 2003, he joined Giulianova (via Chievo in co-ownership deal), where he would spend just one season, scoring three goals in 25 total appearances.

[2] Following such an impressive spell in Verona, he was purchased by Serie A side U.S. Città di Palermo together with teammate Mattia Cassani.

[9] On 4 August 2014, Munari joined English Championship side Watford on a season-long loan deal from Parma.

After his loan at Watford expired, and after leaving Parma, Munari penned a one-year deal with Cagliari on 29 July 2015.