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MANCHESTER, ENGLAND - MARCH 16: Sir Alex Ferguson the UEFA Europa League Round of 16, second leg match between Manchester United and FK Rostov at Old Trafford on March 16, 2017 in Manchester, United Kingdom. (Photo by Stu Forster/Getty Images)

MANCHESTER, ENGLAND - MARCH 16:  Sir Alex Ferguson the UEFA Europa League Round of 16, second leg match between Manchester United and FK Rostov at Old Trafford on March 16, 2017 in Manchester, United Kingdom.  (Photo by Stu Forster/Getty Images)

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MANCHESTER, ENGLAND - MARCH 16: Sir Alex Ferguson the UEFA Europa League Round of 16, second leg match between Manchester United and FK Rostov at Old Trafford on March 16, 2017 in Manchester, United Kingdom. (Photo by Stu Forster/Getty Images)

MANCHESTER, ENGLAND - MARCH 16:  Sir Alex Ferguson the UEFA Europa League Round of 16, second leg match between Manchester United and FK Rostov at Old Trafford on March 16, 2017 in Manchester, United Kingdom.  (Photo by Stu Forster/Getty Images)