Man City boss Mancini: I am not a magician
Goals from Steven Pienaar and Louis Saha (penalty) gave Everton a deserved victory and damaged City's hopes of clinching a Champions League place.
Mancini admits they need time to develop and knows things will not happen overnight.
He may dip into the transfer market but stressed: "I am not a magician.
"I am a manager and I do not think I can change the situation in a month.
"But I believe we can improve game after game. That is possible.
"It is a long season."