Borussia Dortmund supporters will not let Mats Hummels leave without a piece of their mind.
Fans took the opportunity Saturday to boo and whistle at the wantaway defender, who earlier this week expressed his intention of joining rival Bayern Munich.
Related: Hummels tells club of desire to join Bayern Munich this summer
Hummels joined Dortmund initially on loan from Bayern in 2008, and made his move permanent a year later. He became captain in 2014, but a return to his birth city is now a real possibility.
The 27-year-old would be the third Dortmund player in three years to depart BVB for the Bavarian giant, following in the footsteps of Mario Gotze and Robert Lewandowski.