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LOS ANGELES, CA - JULY 21: (EXCLUSIVE COVERAGE) Phil Jones, Chris Smalling, Daley Blind and Matteo Darmian of Manchester United in acton during a first team training session as part of their pre-season tour of the USA at UCLA on July 21, 2017 in Los Angeles, California. (Photo by John Peters/Manchester United via Getty Images)

LOS ANGELES, CA - JULY 21:  (EXCLUSIVE COVERAGE) Phil Jones, Chris Smalling, Daley Blind and Matteo Darmian of Manchester United in acton during a first team training session as part of their pre-season tour of the USA at UCLA on July 21, 2017 in Los Angeles, California.  (Photo by John Peters/Manchester United via Getty Images)

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LOS ANGELES, CA - JULY 21: (EXCLUSIVE COVERAGE) Antonio Valencia of Manchester United in acton during a first team training session as part of their pre-season tour of the USA at UCLA on July 21, 2017 in Los Angeles, California. (Photo by John Peters/Manchester United via Getty Images)

LOS ANGELES, CA - JULY 21:  (EXCLUSIVE COVERAGE) Antonio Valencia of Manchester United in acton during a first team training session as part of their pre-season tour of the USA at UCLA on July 21, 2017 in Los Angeles, California.  (Photo by John Peters/Manchester United via Getty Images)

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LOS ANGELES, CA - JULY 21: (EXCLUSIVE COVERAGE) David de Gea of Manchester United in acton during a first team training session as part of their pre-season tour of the USA at UCLA on July 21, 2017 in Los Angeles, California. (Photo by Matthew Peters/Manchester United via Getty Images)

LOS ANGELES, CA - JULY 21: (EXCLUSIVE COVERAGE) David de Gea of Manchester United in acton during a first team training session as part of their pre-season tour of the USA at UCLA on July 21, 2017 in Los Angeles, California.  (Photo by Matthew Peters/Manchester United via Getty Images)

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LOS ANGELES, CA - JULY 21: (EXCLUSIVE COVERAGE) Marcus Rashford and Victor Lindelof of Manchester United in acton during a first team training session as part of their pre-season tour of the USA at UCLA on July 21, 2017 in Los Angeles, California. (Photo by Matthew Peters/Manchester United via Getty Images)

LOS ANGELES, CA - JULY 21:  (EXCLUSIVE COVERAGE) Marcus Rashford and Victor Lindelof of Manchester United in acton during a first team training session as part of their pre-season tour of the USA at UCLA on July 21, 2017 in Los Angeles, California.  (Photo by Matthew Peters/Manchester United via Getty Images)

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LOS ANGELES, CA - JULY 21: (EXCLUSIVE COVERAGE) Axel Tuanzebe and Anthony Martial of Manchester United in acton during a first team training session as part of their pre-season tour of the USA at UCLA on July 21, 2017 in Los Angeles, California. (Photo by Matthew Peters/Manchester United via Getty Images)

LOS ANGELES, CA - JULY 21:  (EXCLUSIVE COVERAGE) Axel Tuanzebe and Anthony Martial of Manchester United in acton during a first team training session as part of their pre-season tour of the USA at UCLA on July 21, 2017 in Los Angeles, California.  (Photo by Matthew Peters/Manchester United via Getty Images)