Watch: Borussia Dortmund fans boo wantaway captain Hummels

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.