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Serbia's forward Lazar Markovic controls the ball during a training session at Luz stadium in Lisbon on March 28, 2014, on the eve of the EURO 2016 qualifier football match Portugal vs Serbia. AFP PHOTO/ PATRICIA DE MELO MOREIRA (Photo credit should read PATRICIA DE MELO MOREIRA/AFP/Getty Images)

Serbia's forward Lazar Markovic controls the ball during a training session at Luz stadium in Lisbon on March 28, 2014, on the eve of the EURO 2016 qualifier football match Portugal vs Serbia.   AFP PHOTO/ PATRICIA DE MELO MOREIRA        (Photo credit should read PATRICIA DE MELO MOREIRA/AFP/Getty Images)