With the Olympic national team coached by Casiraghi, he won the 2008 Toulon Tournament, in which he played four games and scored a goal against the United States.
Ignazio Silone | Ignazio Visco | Ignazio Giunti | Ignazio Gardella | Ignazio Ciufolini | Sant'Ignazio | Paolo Ignazio Maria Thaon di Revel | Ignazio Porro | Ignazio Marino | Ignazio Licata | Ignazio Danti | Ignazio Collino | Ignazio Abate | Fragneto l'Abate | Count Ignazio Alessandro Cozio di Salabue | Catherine Abate |
Prior to the start of the 2007–08 season, Milan reclaimed Antonini and sent him to Empoli for €1 million, along with his future teammate Ignazio Abate (the 50% valued €0.9 million), in a new co-ownership deal.