Complex sentence: Born in Italy, he however, has Argentine citizenship and began his career in Argentina before joining Stade de Reims in 1971, which was a far less successful team than the one of fifteen years earlier and they struggled in Division 1.
Split into simpler sentences: Born in Italy, he however, has Argentine citizenship and began his career in Argentina. He joined Stade de Reims in 1971, which was a far less successful team than the one of fifteen years earlier and they struggled in Division 1.