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MANCHESTER, ENGLAND - AUGUST 23: (EXCLUSIVE COVERAGE) Zlatan Ibrahimovic of Manchester United in action during a first team training session at Aon Training Complex on August 23, 2016 in Manchester, England. (Photo by John Peters/Manchester United via Getty Images)

MANCHESTER, ENGLAND - AUGUST 23:  (EXCLUSIVE COVERAGE) Zlatan Ibrahimovic of Manchester United in action during a first team training session at Aon Training Complex on August 23, 2016 in Manchester, England.  (Photo by John Peters/Manchester United via Getty Images)

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MANCHESTER, ENGLAND - AUGUST 23: (EXCLUSIVE COVERAGE) Zlatan Ibrahimovic of Manchester United in action during a first team training session at Aon Training Complex on August 23, 2016 in Manchester, England. (Photo by Matthew Peters/Manchester United via Getty Images)

MANCHESTER, ENGLAND - AUGUST 23:  (EXCLUSIVE COVERAGE) Zlatan Ibrahimovic of Manchester United in action during a first team training session at Aon Training Complex on August 23, 2016 in Manchester, England.  (Photo by Matthew Peters/Manchester United via Getty Images)

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MANCHESTER, ENGLAND - AUGUST 23: (EXCLUSIVE COVERAGE) Timothy Fosu-Mensah, Memphis Depay and Zlatan Ibrahimovic of Manchester United in action during a first team training session at Aon Training Complex on August 23, 2016 in Manchester, England. (Photo by Matthew Peters/Manchester United via Getty Images)

MANCHESTER, ENGLAND - AUGUST 23:  (EXCLUSIVE COVERAGE) Timothy Fosu-Mensah, Memphis Depay and Zlatan Ibrahimovic of Manchester United in action during a first team training session at Aon Training Complex on August 23, 2016 in Manchester, England.  (Photo by Matthew Peters/Manchester United via Getty Images)

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MANCHESTER, ENGLAND - AUGUST 23: (EXCLUSIVE COVERAGE) Timothy Fosu-Mensah and Paul Pogba of Manchester United in action during a first team training session at Aon Training Complex on August 23, 2016 in Manchester, England. (Photo by Matthew Peters/Manchester United via Getty Images)

MANCHESTER, ENGLAND - AUGUST 23:  (EXCLUSIVE COVERAGE) Timothy Fosu-Mensah and Paul Pogba of Manchester United in action during a first team training session at Aon Training Complex on August 23, 2016 in Manchester, England.  (Photo by Matthew Peters/Manchester United via Getty Images)