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LONDON, ENGLAND - OCTOBER 19: (4thL) Mesut Ozil celebrates his hat-trick with team mates (L) Alex Iwobi (2ndL) Mohamed Elneny (3rdL) Gabriel, (5thL) Theo Walcott, (4thR) David Ospina (3rdR) Santi Cazorla (2ndR) Hectoe Bellerin and (R) Laurent Koscielny after the UEFA Champions League match between Arsenal FC and PFC Ludogorets Razgrad at Emirates Stadium on October 19, 2016 in London, England. (Photo by Stuart MacFarlane/Arsenal FC via Getty Images)

LONDON, ENGLAND - OCTOBER 19:  (4thL) Mesut Ozil celebrates his hat-trick with team mates (L) Alex Iwobi (2ndL)  Mohamed Elneny (3rdL) Gabriel, (5thL) Theo Walcott, (4thR) David Ospina (3rdR) Santi Cazorla (2ndR) Hectoe Bellerin and (R) Laurent Koscielny after the UEFA Champions League match between Arsenal FC and PFC Ludogorets Razgrad at Emirates Stadium on October 19, 2016 in London, England.  (Photo by Stuart MacFarlane/Arsenal FC via Getty Images)