Mats Hummels of Bayern Munich Editorial Stock Image - Image of bayern, player: 18935604
Dortmund fans' response to Mats Hummels a catastrophe - Rummenigge
Mats Hummels wechselt vom FC Bayern München zurück zu Borussia Dortmund - DER SPIEGEL
Bundesliga English on Twitter: "1995-2007 📅 Mats Hummels began his career at Bayern, where he played for the youth teams up until 2006. For the 2006/07 season he was then promoted to