3) Mats Hummels (Borussia Dortmund)
Finally, central defence is one area the treble winners could improve, and Mats Hummels is undoubtedly one of the best in the world in that position who could move this summer.
3) Mats Hummels (Borussia Dortmund)
Finally, central defence is one area the treble winners could improve, and Mats Hummels is undoubtedly one of the best in the world in that position who could move this summer.