Complex sentence: He made a tentative comeback two years later, with modest CD Leganés; internationally he also appeared for Spain at the 1996 Summer Olympics, playing in all the matches as the national team reached the quarterfinals in Atlanta.
Split into simpler sentences: He made a tentative comeback two years later, with modest CD Leganés. Internationally he also appeared for Spain at the 1996 Summer Olympics, playing in all the matches as the national team reached the quarterfinals in Atlanta.