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LONDON, ENGLAND - AUGUST 06: (THE SUN OUT, THE SUN ON SUNDAY OUT) Nathaniel Clyne of Liverpool competes with Jeremy Mathieu of Barcelona during the International Champions Cup match between Liverpool and Barcelona at Wembley Stadium on August 6, 2016 in London, England. (Photo by Andrew Powell/Liverpool FC via Getty Images)

LONDON, ENGLAND - AUGUST 06:  (THE SUN OUT, THE SUN ON SUNDAY OUT) Nathaniel Clyne of Liverpool competes with Jeremy Mathieu of Barcelona during the International Champions Cup match between Liverpool and Barcelona at Wembley Stadium on August 6, 2016 in London, England.  (Photo by Andrew Powell/Liverpool FC via Getty Images)

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LONDON, ENGLAND - AUGUST 06: Aleix Vidal of Barcelona is closed down by James Milner of Liverpool during the International Champions Cup match between Liverpool and Barcelona at Wembley Stadium on August 6, 2016 in London, England. (Photo by Michael Regan/Getty Images)

LONDON, ENGLAND - AUGUST 06: Aleix Vidal of Barcelona is closed down by James Milner of Liverpool during the International Champions Cup match between Liverpool and Barcelona at Wembley Stadium on August 6, 2016 in London, England.  (Photo by Michael Regan/Getty Images)

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LONDON, ENGLAND - AUGUST 06: (THE SUN OUT, THE SUN ON SUNDAY OUT) Nathaniel Clyne of Liverpool competes with Jeremy Mathieu of Barcelona during the International Champions Cup match between Liverpool and Barcelona at Wembley Stadium on August 6, 2016 in London, England. (Photo by Andrew Powell/Liverpool FC via Getty Images)

LONDON, ENGLAND - AUGUST 06:  (THE SUN OUT, THE SUN ON SUNDAY OUT) Nathaniel Clyne of Liverpool competes with Jeremy Mathieu of Barcelona during the International Champions Cup match between Liverpool and Barcelona at Wembley Stadium on August 6, 2016 in London, England.  (Photo by Andrew Powell/Liverpool FC via Getty Images)