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Wolfsburg's players celebrate after midfielder Maximilian Arnold (hidden) scored the 2-0 goal during the UEFA Champions League quarter-final, first-leg football match between VfL Wolfsburg and Real Madrid on April 6, 2016 in Wolfsburg, northern Germany. / AFP / ODD ANDERSEN (Photo credit should read ODD ANDERSEN/AFP via Getty Images)

Wolfsburg's players celebrate after midfielder Maximilian Arnold (hidden) scored the 2-0 goal during the UEFA Champions League quarter-final, first-leg football match between VfL Wolfsburg and Real Madrid on April 6, 2016 in Wolfsburg, northern Germany.  / AFP / ODD ANDERSEN        (Photo credit should read ODD ANDERSEN/AFP via Getty Images)