The Germany international knows he will be an unpopular figure when he locks horns with his former club in Bayern Munich colors in the DFL-Supercup next weekend.
Mats Hummels is expecting a hot reception from Borussia Dortmund fans when he returns to Signal Iduna Park with Bayern Munich in the DFL-Supercup next weekend.
Hummels rejoined Bayern in May after a hugely-successful eight-year spell at Dortmund during which he won two Bundesliga titles and developed into one of Europe's premier central defenders.
The drain of talent from Westphalia to Bavaria in recent years - Mario Gotze and Robert Lewandowski also having moved south, although the former returned to Dortmund last month - has increased the rivalry between Germany's top two clubs.