At São Paulo, Bosco was the second goalkeeper, playing in 17 games. He played an important part in the championship-winning season of 2006, as first choice keeper Rogerio Ceni was injured for lengthy periods.
Bosco played as the second goalkeeper at São Paulo, appearing in 17 matches. During the championship-winning year of 2006, he filled in for injured first-choice keeper Rogerio Ceni, playing a crucial role for the team.