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Sporting's Algerian forward Islam Slimani (C) celebrates after scoring during the Portuguese league football match Sporting CP vs FC Porto at the Jose Alvalade stadium in Lisbon on August 28, 2016. / AFP / PATRICIA DE MELO MOREIRA (Photo credit should read PATRICIA DE MELO MOREIRA/AFP/Getty Images)

Sporting's Algerian forward Islam Slimani (C) celebrates after scoring during the Portuguese league football match Sporting CP vs FC Porto at the Jose Alvalade stadium in Lisbon on August 28, 2016. / AFP / PATRICIA DE MELO MOREIRA        (Photo credit should read PATRICIA DE MELO MOREIRA/AFP/Getty Images)