The 23-year-old Mexican went down in the Villa penalty box untouched by an opposing defender, appearing to turn on his left ankle early into the game. Whilst there is no indication yet as to how serious the nature of the injury is, and in turn how long Chicharito will be sidelined for, the news will be of concern to boss Sir Alex Ferguson.United find themselves eight points behind league leaders Manchester City and in third place in the Premier League going into to Saturday\'s evening kick-off at Villa Park.