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GRONINGEN, NETHERLANDS - JULY 18: Cuco Martina of FC Southampton runs with the ball during the friendly match between FC Groningen and FC Southampton at Euroborg Arena on July 18, 2015 in Groningen, Netherlands. (Photo by Christof Koepsel/Getty Images)

GRONINGEN, NETHERLANDS - JULY 18: Cuco Martina of FC Southampton runs with the ball during the friendly match between FC Groningen and FC Southampton at Euroborg Arena on July 18, 2015 in Groningen, Netherlands.  (Photo by Christof Koepsel/Getty Images)