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Florentino Pérez wants the German player and will wait for him until the next summer transfer window 2015, when Real Madrid would pay 23M€ due to Borussia's debt over Sahin.
Chelsea have accepted a £10 million bid from AC Milan for Fernando Torres but are set to bank only £4m after giving the 30-year-old a £6m pay-off to make the move.
Due to injury problems in the midfield Borussia Dortmund consider bringing Shinji Kagawa back to Signal Iduna Park. The Japanese could leave Manchester United after Louis van Gaal made clear that he is unsatisfied with his performances.