Siena | University of Siena | Catherine of Siena | Siena Cathedral | Province of Siena | Palio di Siena | Monte dei Paschi di Siena | Siena Heights University | Siena Blaze | Torrita di Siena | Siena College | Roman Catholic Archdiocese of Siena-Colle di Val d'Elsa-Montalcino | Republic of Siena | republic of Siena | Francesco Patrizi of Siena | Council of Siena | Bernardino of Siena | 51st ''Siena'' | 51st Infantry Division Siena |
In January 2005, after just played 2 league matches for the Udine club, he joined another Serie A side Siena.
In 2001 he moved to Bulgaria to join Luigi Simoni at CSKA Sofia, working alongside him also in his following experiences at Ancona, Napoli and Siena.
Born in Feldkirch, Austria, Büchel began his career with the youth teams of Swiss club FC St. Gallen and Italian club Siena.