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Northern Ireland's striker Kyle Lafferty celebrates on the pitch after the Euro 2016 qualifying football match between Northern Ireland and Finland at Windsor Park, Belfast in Northern Ireland on March 29, 2015. Lafferty scored both goals as Northern Ireland won the game 2-1. AFP PHOTO / MICHAEL COOPER (Photo credit should read Michael Cooper/AFP via Getty Images)

Northern Ireland's striker Kyle Lafferty celebrates on the pitch after the Euro 2016 qualifying football match between Northern Ireland and Finland at Windsor Park, Belfast in Northern Ireland on March 29, 2015. Lafferty scored both goals as Northern Ireland won the game 2-1. AFP PHOTO / MICHAEL COOPER        (Photo credit should read Michael Cooper/AFP via Getty Images)