Generate a sentence about this data: AZ Alkmaar MANAGER John van den Brom; John van den Brom CLUB AFC Ajax; John van den Brom CLUB Istanbulspor A.S.; AZ Alkmaar OWNER Max Huiberts
John van den Brom is the manager of AZ Alkmaar which is owned by Max Huiberts. He also plays for both AFC Ajax and Istanbulspor AS.