Well, regarding Arsenal, maybe just Giroud getting injured would be enough. And regarding Tottenham they bought too many players. Soldado isn't the only one playing bad, but the thing is the system doesn't fit him. With those stupid wingers that can only cut inside, the team plays too narrow and he can't get enough good service to be able to score. Chelsea has been disappointing too, and it's beyond any scientific explanation why Juan Mata doesn't play.