8) Mats Hummels (Borussia Dortmund)
There are few better defenders around than the German World Cup winner. Their recent defeat at the hands of Schalke showed Madrid have weaknesses at the back, and Hummels could be the perfect solution.
7) Angel di Maria (Manchester United)
Di Maria left Madrid for Manchester United last summer, costing the Red Devils a club record fee of just under £60m. Unfortunately, the Argentine has struggled to settle in England, and could be open to a return.