Complex sentence: He has a son, Alessandro, who works as an agent for several football players and managers, and is head of GEA World, a consortium of football agents and managers, which the company and Alessandro were ranked the first by volume from 2002 to 2006.
Split into simpler sentences: He has a son Alessandro, who works as an agent for several football players and managers. He is head of GEA World, a consortium of football agents and managers, which the company and Alessandro were ranked the first by volume from 2002 to 2006.