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COLOGNE, GERMANY - DECEMBER 10: Sebastian Rode of Dortmund and Mergim Mavraj of Cologne battle for the ball during the Bundesliga match between 1. FC Cologne and Borussia Dortmund at the RheinEnergie stadium in Cologne, Germany on December 10, 2016. (Photo by TF-Images/Getty Images)

COLOGNE, GERMANY - DECEMBER 10: Sebastian Rode of Dortmund and Mergim Mavraj of Cologne battle for the ball during the Bundesliga match between 1. FC Cologne and Borussia Dortmund at the RheinEnergie stadium in Cologne, Germany on December 10, 2016. (Photo by TF-Images/Getty Images)

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COLOGNE, GERMANY - DECEMBER 10: Jonas Hector of Cologneand Mergim Mavraj of Cologne, Marc Bartra of Dortmund looks on during the Bundesliga match between 1. FC Cologne and Borussia Dortmund at the RheinEnergie stadium in Cologne, Germany on December 10, 2016. (Photo by TF-Images/Getty Images)

COLOGNE, GERMANY - DECEMBER 10: Jonas Hector of Cologneand Mergim Mavraj of Cologne, Marc Bartra of Dortmund looks on during the Bundesliga match between 1. FC Cologne and Borussia Dortmund at the RheinEnergie stadium in Cologne, Germany on December 10, 2016. (Photo by TF-Images/Getty Images)

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COLOGNE, GERMANY - DECEMBER 10: Sebastian Rode of Dortmund and Mergim Mavraj of Cologne battle for the ball during the Bundesliga match between 1. FC Cologne and Borussia Dortmund at the RheinEnergie stadium in Cologne, Germany on December 10, 2016. (Photo by TF-Images/Getty Images)

COLOGNE, GERMANY - DECEMBER 10: Sebastian Rode of Dortmund and Mergim Mavraj of Cologne battle for the ball during the Bundesliga match between 1. FC Cologne and Borussia Dortmund at the RheinEnergie stadium in Cologne, Germany on December 10, 2016. (Photo by TF-Images/Getty Images)