2) Mats Hummels (Borussia Dortmund)
Another superb centre-back, Borussia Dortmund star Mats Hummels is being targeted by van Gaal in what could potentially be an entirely new-look back four next season.
2) Mats Hummels (Borussia Dortmund)
Another superb centre-back, Borussia Dortmund star Mats Hummels is being targeted by van Gaal in what could potentially be an entirely new-look back four next season.