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BARCELONA, SPAIN - SEPTEMBER 13: Lionel Messi of FC Barcelona runs with the ball during the UEFA Champions League Group C match between FC Barcelona and Celtic FC at Camp Nou on September 13, 2016 in Barcelona, . (Photo by David Ramos/Getty Images)

BARCELONA, SPAIN - SEPTEMBER 13:  Lionel Messi of FC Barcelona runs with the ball during the UEFA Champions League Group C match between FC Barcelona and Celtic FC at Camp Nou on September 13, 2016 in Barcelona, .  (Photo by David Ramos/Getty Images)