Bayern's Leon Goretzka, left, challenges for the ball with Celtic's Alistair Johnston during the Champions League playoff second leg soccer match between FC Bayern Munich and Celtic Glasgow at the Allianz Arena in Munich, Germany.

Bayern's Alphonso Davies, centre, celebrates after scoring his side's opening goal during the Champions League playoff second leg soccer match between FC Bayern Munich and Celtic Glasgow at the Allianz Arena in Munich, Germany.

Bayern's Josip Stanisic, centre, challenges for the ball with Celtic's Daizen Maeda during the Champions League playoff second leg soccer match between FC Bayern Munich and Celtic Glasgow at the Allianz Arena in Munich, Germany.

Celtic's Adam Idah, left, kicks the ball ahead of Bayern's Michael Olise during the Champions League playoff second leg soccer match between FC Bayern Munich and Celtic Glasgow at the Allianz Arena in Munich, Germany.

Bayern's Leroy Sane, left, challenges for the ball with Celtic's Daizen Maeda during the Champions League playoff second leg soccer match between FC Bayern Munich and Celtic Glasgow at the Allianz Arena in Munich, Germany.

Celtic's Callum McGregor, left, challenges for the ball with Bayern's Michael Olise during the Champions League playoff second leg soccer match between FC Bayern Munich and Celtic Glasgow at the Allianz Arena in Munich, Germany.

Celtic's Nicolas Kuehn, centre, celebrates with teammates after scoring his side's opening goal during the Champions League playoff second leg soccer match between FC Bayern Munich and Celtic Glasgow at the Allianz Arena in Munich, Germany.

Bayern's Leon Goretzka, left, kicks the ball ahead of Celtic's Auston Trusty during the Champions League playoff second leg soccer match between FC Bayern Munich and Celtic Glasgow at the Allianz Arena in Munich, Germany.

Bayern's Michael Olise, centre right, challenges for the ball with Celtic's Nicolas Kuehn, right, and Celtic's Auston Trusty during the Champions League playoff second leg soccer match between FC Bayern Munich and Celtic Glasgow at the Allianz Arena in Munich, Germany.

Bayern's Harry Kane, right, challenges for the ball with Celtic's Alistair Johnston during the Champions League playoff second leg soccer match between FC Bayern Munich and Celtic Glasgow at the Allianz Arena in Munich, Germany.