Mats Hummels signs contract extension with Borussia Dortmund
BVB: „Geht irgendwann nach hinten los“ – Matthäus knöpft sich Hummels vor - WELT
Off the Crossbar: Cologne Alone — Borussia Dortmund's Mats Hummels gone and forgotten - Bavarian Football Works
Manchester United get all-clear to sign Borussia Dortmund's Mats Hummels | Borussia Dortmund | The Guardian
Mats Hummels: Adjusting to life back at Borussia Dortmund was easier than I expected
The Daily Bee: A Crazy Sporting Weekend, and Mats Hummels Makes History - Fear The Wall
Hummels to BVB? Dortmund need to focus on finding the next Hummels instead - Fussballstadt
Top 5 Moments | Mats Hummels - YouTube
Opinion: Hummels' BVB return is worth the risk – DW – 06/19/2019
Borussia Dortmund defender Mats Hummels unsure of future at club | Football News | Sky Sports
Manchester United transfer news: Mats Hummels 'tells team-mates' his Borussia Dortmund exit is on the verge of being sealed | The Independent | The Independent