In January 2010 he returned to Sicily on a temporary deal. Fornoni was the first choice ahead of Domenico Cecere. However, he was replaced by Antonio Castelli after 3 games. Castelli played 7 games ahead of Fornoni since round 27 and Fornoni was only able to play the last round (round 34). Siracusa finished sixth in Group C of the 2009–10 Lega Pro Seconda Divisione. At the start of season Siracusa was invited to play in the 2010–11 Lega Pro Prima Divisione (third division) to fill the vacancies. Since the 2010–11 season he was the backup of Paolo Baiocco. Siracusa signed Fornoni on a co-ownership deal that season. In June 2011 Crotone gave up the remaining 50% registration rights to Siracusa.
