Police are investigating reports of a violent clash between Liverpool and Manchester City fans before the Community Shield match at Wembley.
Leroy Sane, who continues to be linked with Bayern Munich, started the Community Shield only to suffer an injury.
Sergio Aguero reached 200 goals for Manchester City as his double saw Pep Guardiola's side overcome Chelsea 2-0 in the Community Shield at Wembley.
Juan Mata was replaced half an hour after coming on for Manchester United in the Community Shield, but Jose Mourinho has explained things.
Manchester United manager Jose Mourinho hailed Leicester City's Premier League title miracle, while accusing the continent's bigger clubs of perceiving themselves a "the Mother Teresa of football".
Manchester City won the Community Shield for the second straight year, claiming a 5-4 penalty shootout win over Liverpool after a 1-1 draw at Wembley.