United also went into the heavyweight cup clash on a poor run and Ferguson responded by making several changes and including seven defensive players in his line-up . Manchester United beat Arsenal 2 - 0 to reach FA Cup semifinals . Goals from Fabio and Wayne Rooney seal United 's passage . Liverpool win 3 - 2 at Birmingham in earlier quarterfinal Saturday .
Manchester United beat Arsenal 2 - 0 to reach FA Cup semifinals . Goals from Fabio and Wayne Rooney seal United 's passage . Liverpool win 3 - 2 at Birmingham in earlier quarterfinal Saturday .