Borussia Dortmund

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FILE - This is a Tuesday, April 1, 2014 file photo of Borussia Dortmund's head coach Juergen Klopp as he laughs during a press conference at the Santiago Bernabeu stadium in Madrid, Spain. Klopp is one of the potential full-time replacements for David Moyes as Manchester United manager after his firing on Tuesday, April 22, 2014(AP Photo/Andres Kudacki, File)

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10ThingstoSeeSports - Dortmund's Sokratis, left, and Wolfsburg's Bernard Malanda-Adje lie injured on the pitch during the German soccer cup (DFB Pokal) semifinal match between BvB Borussia Dortmund and VfL Wolfsburg Tuesday, April 15, 2014, in Dortmund, Germany. (AP Photo/Frank Augstein, File)

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Dortmund's Sokratis, left, and Wolfsburg's Ivica Olic challenge for the ball during the semifinal match of the German soccer cup between Borussia Dortmund and VfL Wolfsburg in Dortmund , Germany, Tuesday, April 15, 2014. (AP Photo/Martin Meissner)

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Dortmund's Henrikh Mkhitaryan of Armenia, center, jumps to celebrate his opening goal during the semifinal match of the German soccer cup between Borussia Dortmund and VfL Wolfsburg in Dortmund , Germany, Tuesday, April 15, 2014. (AP Photo/Martin Meissner)

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Dortmund's Robert Lewandowski of Poland, right, scores his side's second goal during the semifinal match of the German soccer cup between Borussia Dortmund and VfL Wolfsburg in Dortmund , Germany, Tuesday, April 15, 2014. (AP Photo/Martin Meissner)

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Dortmund's Robert Lewandowski of Poland, far right, scores during the German soccer cup (DFB Pokal) semifinal match between BvB Borussia Dortmund and VfL Wolfsburg Tuesday, April 15, 2014 in Dortmund, Germany. (AP Photo/Frank Augstein)

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Dortmund's Robert Lewandowski of Poland, right, scores his side's second goal during the semifinal match of the German soccer cup between Borussia Dortmund and VfL Wolfsburg in Dortmund , Germany, Tuesday, April 15, 2014. (AP Photo/Martin Meissner)

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Dortmund's Robert Lewandowski of Poland, right, celebrates with Dortmund's Henrikh Mkhitaryan of Armenia, left, after scoring during the German soccer cup (DFB Pokal) semifinal match between BvB Borussia Dortmund and VfL Wolfsburg Tuesday, April 15, 2014 in Dortmund, Germany. (AP Photo/Frank Augstein)