Complex sentence: He made his debut, and only appearance, for the club on 13 May 2007 against Charlton Athletic F.C. in the last league game of the 2006--07 season to become the first Italian to ever play for the club.
Split into simpler sentences: He made his debut, and only appearance, for the club on 13 May 2007 against Charlton Athletic F.C. in the last league game of the 2006--07 season. Subsequently becoming the first Italian to ever play for the club.