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Dortmund's head coach Thomas Tuchel attends a training session at Alvalade stadium in Lisbon on October 17, 2016, on the eve of the UEFA Champions League group F football match Sporting CP vs Borussia Dortmund. / AFP / PATRICIA DE MELO MOREIRA (Photo credit should read PATRICIA DE MELO MOREIRA/AFP/Getty Images)

Dortmund's head coach Thomas Tuchel attends a training session at Alvalade stadium in Lisbon on October 17, 2016, on the eve of the UEFA Champions League group F football match Sporting CP vs Borussia Dortmund.    / AFP / PATRICIA DE MELO MOREIRA        (Photo credit should read PATRICIA DE MELO MOREIRA/AFP/Getty Images)