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HOUSTON, TX - JULY 20: Paul Pogba of Manchester United and Romelu Lukaku of Manchester United during the International Champions Cup 2017 match between Manchester United and Manchester City at NRG Stadium on July 20, 2017 in Houston, Texas. (Photo by Robbie Jay Barratt - AMA/Getty Images)

HOUSTON, TX - JULY 20: Paul Pogba of Manchester United and Romelu Lukaku of Manchester United during the International Champions Cup 2017 match between Manchester United and Manchester City at NRG Stadium on July 20, 2017 in Houston, Texas. (Photo by Robbie Jay Barratt - AMA/Getty Images)

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CARSON, CA - JULY 15: Paul Pogba #6 and Romelo Lukaku #9 of Manchester United celebrate a 4-0 lead after a goal from Henrikh Mkhitaryan #22 during the second half at StubHub Center on July 15, 2017 in Carson, California. (Photo by Harry How/Getty Images)

CARSON, CA - JULY 15:  Paul Pogba #6 and Romelo Lukaku #9 of Manchester United celebrate a 4-0 lead after a goal from Henrikh Mkhitaryan #22 during the second half at StubHub Center on July 15, 2017 in Carson, California.  (Photo by Harry How/Getty Images)