Everton boss Roberto Martinez says he is not aware of any transfer request made by defender John Stones.

It comes after reports in the Sun that the 21-year-old is considering going public over a desire to join Chelsea.

Martinez insists Stones is not for sale and when asked if he knew of a transfer request said: "Not at all, no."

The Spaniard confirmed Stones will face Manchester City on Sunday.

He added: "[Stones] has been the hot topic of this transfer window. My only concern is preparing for the game."