Manuel Pellegrini, manager of Manchester City, looks on ahead of the Barclays Premier League match between Manchester City and Manchester United at the Etihad Stadium(City of Manchester Stadium) in Manchester, Britain on September 22, 2013. Manchester City won 4-1. (Xinhua/Wang Lili)

 

David Moyes, manager of Manchester United, looks on ahead of the Barclays Premier League match between Manchester City and Manchester United at the Etihad Stadium(City of Manchester Stadium) in Manchester, Britain on September 22, 2013. Manchester City won 4-1. (Xinhua/Wang Lili)

 

Vincent Kompany (4th R) of Manchester City defends during the Barclays Premier League match between Manchester City and Manchester United at the Etihad Stadium(City of Manchester Stadium) in Manchester, Britain on September 22, 2013. Manchester City won 4-1. (Xinhua/Wang Lili)

 

Referee Howard Webb shows a yellow card to Wayne Rooney (R) of Manchester United during the Barclays Premier League match between Manchester City and Manchester United at the Etihad Stadium(City of Manchester Stadium) in Manchester, Britain on September 22, 2013. Manchester City won 4-1. (Xinhua/Wang Lili)

 

Alvaro Negredo (front) of Manchester City vies with Marouane Fellaini of Manchester United during their Barclays Premier League match at the Etihad Stadium(City of Manchester Stadium) in Manchester, Britain on September 22, 2013. Manchester City won 4-1. (Xinhua/Wang Lili)

 

Sergio Aguero (L) of Manchester City vies with Chris Smalling of Manchester United during their Barclays Premier League match at the Etihad Stadium(City of Manchester Stadium) in Manchester, Britain on September 22, 2013. Manchester City won 4-1. (Xinhua/Wang Lili)

 

Players of Manchester City defend as Wayne Rooney (1st L) of Manchester United takes a freekick during their Barclays Premier League match at the Etihad Stadium(City of Manchester Stadium) in Manchester, Britain on September 22, 2013. Manchester City won 4-1. (Xinhua/Wang Lili)

 

Yaya Toure (1st L) of Manchester City celebrates scoring during the Barclays Premier League match between Manchester City and Manchester United at the Etihad Stadium(City of Manchester Stadium) in Manchester, Britain on September 22, 2013. Manchester City won 4-1. (Xinhua/Wang Lili)

 

Wayne Rooney (4th L) of Manchester United argues with referee Howard Webb during the Barclays Premier League match between Manchester City and Manchester United at the Etihad Stadium(City of Manchester Stadium) in Manchester, Britain on September 22, 2013. Manchester City won 4-1. (Xinhua/Wang Lili)

 

Samir Nasri of Manchester City celebrates scoring during the Barclays Premier League match between Manchester City and Manchester United at the Etihad Stadium(City of Manchester Stadium) in Manchester, Britain on September 22, 2013. Manchester City won 4-1. (Xinhua/Wang Lili)

 

Sergio Aguero (R) of Manchester City celebrates his first goal during the Barclays Premier League match between Manchester City and Manchester United at the Etihad Stadium(City of Manchester Stadium) in Manchester, Britain on September 22, 2013. Manchester City won 4-1. (Xinhua/Wang Lili)

 

Players of Manchester City celebrate Samir Nasri's goal during the Barclays Premier League match between Manchester City and Manchester United at the Etihad Stadium (City of Manchester Stadium) in Manchester, Britain, on September 22, 2013. Manchester City won 4-1. (Xinhua/Wang Lili)

 

Samir Nasri of Manchester City celebrates scoring during the Barclays Premier League match between Manchester City and Manchester United at the Etihad Stadium(City of Manchester Stadium) in Manchester, Britain on September 22, 2013. Manchester City won 4-1. (Xinhua/Wang Lili)

 

Samir Nasri of Manchester City celebrates scoring during the Barclays Premier League match between Manchester City and Manchester United at the Etihad Stadium(City of Manchester Stadium) in Manchester, Britain on September 22, 2013. Manchester City won 4-1. (Xinhua/Wang Lili)