Simplify the following text for a Grade 9 native English-speaking person.
Original: The Commission 's chairman is Mike Fitzpatrick , a former Subiaco and Carlton player , and the Chief Executive is Andrew Demetriou . After playing for North Melbourne and Hawthorn , Demetriou had a successful business career before returning to the football world as chief executive of the AFL Players Association .
Simplified: The chief executive is Andrew Demetriou .