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MANCHESTER, ENGLAND - SEPTEMBER 10: Wayne Rooney of Manchester United walks out to the pitch with his team-mates prior to the Premier League match between Manchester United and Manchester City at Old Trafford on September 10, 2016 in Manchester, England. (Photo by John Peters/Manchester United via Getty Images)

MANCHESTER, ENGLAND - SEPTEMBER 10:  Wayne Rooney of Manchester United  walks out to the pitch with his team-mates prior to the Premier League match between Manchester United and Manchester City at Old Trafford on September 10, 2016 in Manchester, England.  (Photo by John Peters/Manchester United via Getty Images)

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MANCHESTER, ENGLAND - SEPTEMBER 10: Wayne Rooney of Manchester United waits to walk out to the pitch prior to the Premier League match between Manchester United and Manchester City at Old Trafford on September 10, 2016 in Manchester, England. (Photo by John Peters/Manchester United via Getty Images)

MANCHESTER, ENGLAND - SEPTEMBER 10:  Wayne Rooney of Manchester United waits to walk out to the pitch prior to the Premier League match between Manchester United and Manchester City at Old Trafford on September 10, 2016 in Manchester, England.  (Photo by John Peters/Manchester United via Getty Images)

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MANCHESTER, ENGLAND - SEPTEMBER 10: The Manchester United and Manchester City teams walk out to the pitch prior to the Premier League match between Manchester United and Manchester City at Old Trafford on September 10, 2016 in Manchester, England. (Photo by John Peters/Manchester United via Getty Images)

MANCHESTER, ENGLAND - SEPTEMBER 10:  The Manchester United and Manchester City teams walk out to the pitch prior to the Premier League match between Manchester United and Manchester City at Old Trafford on September 10, 2016 in Manchester, England.  (Photo by John Peters/Manchester United via Getty Images)