Complex sentence: He is a former coach of the Under 23 side with whom he qualified for the 2008 Olympics in Beijing in January 2008 following the resignation of Ulrich Stielike due to personal reasons.
Split into simpler sentences: He is a former coach of the Under 23 side with whom he qualified for the 2008 Olympics in Bejing. In January 2008 following the resignation of Ulrich Stielike due to personal reasons.