Meanwhile , Schumacher 's manager Willi Weber said guardedly yesterday : " I know that Michael spoke with Dieter Zetsche and Norbert Haug at the season 's finale in Abu Dhabi , " referring respectively to the CEO of Daimler AG , the parent company of Mercedes-Benz , and the vice president of motor sport at Mercedes , who gave Schumacher his big chance in sportscar racing early last decade .