Complex sentence: He wore no.1 shirt in 2008 UEFA European Under-17 Football Championship elite qualification, but as the backup of Filippo Perucchini, because Simone Colombi left the squad in the final minutes.
Split into simpler sentences: He wore no.1 shirt in 2008 UEFA European Under-17 Football Championship elite qualification, but as the backup of Filippo Perucchini. It is because Simone Colombi left the squad in the final minutes.