Complex sentence: He joined the Pumas youh system and worked his way through the ranks to join them this season, he has yet to make his first division debut; he usually plays as a central back of the defense and this season would try to become a regular starter.
Split into simpler sentences: He joined the Pumas youth system and worked his way through the ranks to join them. He has yet to make his first division debut; he usually plays as a central back of the defense and this season would try to become a regular starter.