The two sides are hoping to win the race to sign the talented German defender, who has shone for Borussia Dortmund.
But there is also competition from Barcelona, who are in the market for a new centre back.
The two sides are hoping to win the race to sign the talented German defender, who has shone for Borussia Dortmund.
But there is also competition from Barcelona, who are in the market for a new centre back.
