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LONDON, ENGLAND - MARCH 07: Arjen Robben of Bayern Muenchen (C) celebrates as he scores their second goal with team mates Arturo Vidal (R) and Franck Ribery (L) during the UEFA Champions League Round of 16 second leg match between Arsenal FC and FC Bayern Muenchen at Emirates Stadium on March 7, 2017 in London, United Kingdom. (Photo by Clive Mason/Getty Images)

LONDON, ENGLAND - MARCH 07:  Arjen Robben of Bayern Muenchen (C) celebrates as he scores their second goal with team mates Arturo Vidal (R) and Franck Ribery (L) during the UEFA Champions League Round of 16 second leg match between Arsenal FC and FC Bayern Muenchen at Emirates Stadium on March 7, 2017 in London, United Kingdom.  (Photo by Clive Mason/Getty Images)

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LONDON, ENGLAND - MARCH 07: Laurent Koscielny of Arsenal (C) reacts as he is shown a red card by referee Anastasios Sidiropoulos and is sent off during the UEFA Champions League Round of 16 second leg match between Arsenal FC and FC Bayern Muenchen at Emirates Stadium on March 7, 2017 in London, United Kingdom. (Photo by Shaun Botterill/Getty Images)

LONDON, ENGLAND - MARCH 07:  Laurent Koscielny of Arsenal (C) reacts as he is shown a red card by referee Anastasios Sidiropoulos and is sent off during the UEFA Champions League Round of 16 second leg match between Arsenal FC and FC Bayern Muenchen at Emirates Stadium on March 7, 2017 in London, United Kingdom.  (Photo by Shaun Botterill/Getty Images)

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LONDON, ENGLAND - MARCH 07: Robert Lewandowski of Bayern Muenchen (2R) celebrates with team mates as he scores their first goal from a penalty during the UEFA Champions League Round of 16 second leg match between Arsenal FC and FC Bayern Muenchen at Emirates Stadium on March 7, 2017 in London, United Kingdom. (Photo by Clive Mason/Getty Images)

LONDON, ENGLAND - MARCH 07:  Robert Lewandowski of Bayern Muenchen (2R) celebrates with team mates as he scores their first goal from a penalty during the UEFA Champions League Round of 16 second leg match between Arsenal FC and FC Bayern Muenchen at Emirates Stadium on March 7, 2017 in London, United Kingdom.  (Photo by Clive Mason/Getty Images)

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LONDON, ENGLAND - MARCH 07: Theo Walcott (C) of Arsenal scores a goal during the UEFA Champions League Round of 16 second leg match between Arsenal FC and FC Bayern Munich at Emirates Stadium on March 7, 2017 in London, United Kingdom. (Photo by Tolga Akmen/Anadolu Agency/Getty Images)

LONDON, ENGLAND - MARCH 07: Theo Walcott (C) of Arsenal scores a goal during the UEFA Champions League Round of 16 second leg match between Arsenal FC and FC Bayern Munich at Emirates Stadium on March 7, 2017 in London, United Kingdom. 


 (Photo by Tolga Akmen/Anadolu Agency/Getty Images)

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LONDON, ENGLAND - MARCH 07: Robert Lewandowski (R) of Bayern Munich in action against David Ospina (L) of Arsenal during the UEFA Champions League Round of 16 second leg match between Arsenal FC and FC Bayern Munich at Emirates Stadium on March 7, 2017 in London, United Kingdom. (Photo by Tolga Akmen/Anadolu Agency/Getty Images)

LONDON, ENGLAND - MARCH 07: Robert Lewandowski (R) of Bayern Munich in action against David Ospina (L) of Arsenal during the UEFA Champions League Round of 16 second leg match between Arsenal FC and FC Bayern Munich at Emirates Stadium on March 7, 2017 in London, United Kingdom. 


 (Photo by Tolga Akmen/Anadolu Agency/Getty Images)