Sebastian Rode has joined Borussia Dortmund from Bundesliga rivals Bayern Munich.
Bayern have famously poached a number of Dortmund's key players in recent seasons, with Robert Lewandowski, Mario Gotze and Mats Hummels among those that have swapped Dortmund for Munich.
However, Rode has moved in the opposite direction, signing a four-year contract at Signal Iduna Park.
"I am a childhood BVB fan and therefore am really looking forward to playing for my favourite club. Thomas Tuchel is a top-class coach. I am looking forward to the new challenge and my first home game in black and yellow in the Signal Iduna Park," Rode told reporters.
The 25-year-old started just 11 Bundesliga matches in two seasons at the Allianz Arena.