Zomer returned to Trentino for Trento, then moved to Tuscany side Siena.
After the team promoted due to Caso Genoa, he was exchanged with Adriano Zancopè of Siena.
[1] He worked as the backup of young keeper Antonio Mirante and competed with Marco Fortin.
[3][4] In January 2008, he swapped club with Luca Brignoli, to Serie C2 side Lumezzane.
[6] On 2 July 2009, Zomer returned to South Tyrol for the second time, winning group a of 2009–10 Lega Pro Seconda Divisione.