LONDON, ENGLAND - SEPTEMBER 28: Theo Walcott heads past Basel defender Adama Traore to score for Arsenal during the UEFA Champions League match between Arsenal FC and FC Basel 1893 at Emirates Stadium on September 28, 2016 in London, England. (Photo by Stuart MacFarlane/Arsenal FC via Getty Images)
(l-r) Ivan Rakitic of FC Barcelona, Raffael of Borussia Monchengladbach, Sergio Busquets of FC Barcelona during the UEFA Champions League group C match between Borussia Monchengladbach and FC Barcelona on September 28, 2016 at the Borussia Park stadium in Monchengladbach, Germany(Photo by VI Images via Getty Images)
DORTMUND, GERMANY - SEPTEMBER 27: Raphael Guerreiro of Dortmund controles the ball during the UEFA Champions League Group F match between Borussia Dortmund and Real Madrid CF at Signal Iduna Park on September 27, 2016 in Dortmund, North Rhine-Westphalia. (Photo by Alex Grimm/Bongarts/Getty Images)
DORTMUND, GERMANY - SEPTEMBER 27: Pierre-Emerick Aubameyang of Borussia Dortmund #17 celebrates and goes to collect the ball after he scores their first goal past goalkepper, Keylor Navas (L) of Real Madrid during the UEFA Champions League Group F match between Borussia Dortmund and Real Madrid CF at Signal Iduna Park on September 27, 2016 in Dortmund, North Rhine-Westphalia during the UEFA Champions League match between XXX and XXX at Signal Iduna Park on September 27, 2016 in Dortmund, North Rhine-Westphalia. (Photo by Dean Mouhtaropoulos/Bongarts/Getty Images )
Paris Saint-Germain's Argentinian forward Angel Di Maria (L) reacts in pain after falling during the UEFA Champions League Group A football match between Ludogorets Razgrad and Paris Saint-Germain (PSG) at Vasil Levski National Stadium in Sofia on September 28, 2016. / AFP / DIMITAR DILKOFF (Photo credit should read DIMITAR DILKOFF/AFP/Getty Images)
