Robert Lewandowski (L) of Bayern Munich celebrates his first scoring with teammate Philippe Coutinho during a German Bundesliga match between FC Bayern Munich and 1.FC Koeln in Munich, Germany, on Sept. 21, 2019. (Photo by Philippe Ruiz/Xinhua)

Robert Lewandowski (L) of Bayern Munich celebrates his second scoring during a German Bundesliga match between FC Bayern Munich and 1.FC Koeln in Munich, Germany, on Sept. 21, 2019. (Photo by Philippe Ruiz/Xinhua)

Ivan Perisic (R) of Bayern Munich takes a scoring shot during a German Bundesliga match between FC Bayern Munich and 1.FC Koeln in Munich, Germany, on Sept. 21, 2019. (Photo by Philippe Ruiz/Xinhua)

Philippe Coutinho (L) of Bayern Munich celebrates his scoring during a German Bundesliga match between FC Bayern Munich and 1.FC Koeln in Munich, Germany, on Sept. 21, 2019. (Photo by Philippe Ruiz/Xinhua)

Ivan Perisic (R, top) of Bayern Munich vies with Rafael Czichos (bottom) of Koeln during a German Bundesliga match between FC Bayern Munich and 1.FC Koeln in Munich, Germany, on Sept. 21, 2019. (Photo by Philippe Ruiz/Xinhua)

Serge Gnabry (R) of Bayern Munich breaks through the defense from Matthias Bader of Koeln during a German Bundesliga match between FC Bayern Munich and 1.FC Koeln in Munich, Germany, on Sept. 21, 2019. (Photo by Philippe Ruiz/Xinhua)