Chelsea boss Mauricio Pochettino has ruled out selling Levi Colwill.

The defender is being linked with a return to Brighton, where he spent last season on-loan.

After victory over the Seagulls in Philadelphia, Pochettino said: "He is our player.

"His performance was good today, better than what I expected because it is only the first game with us after the season with Brighton.

"I am so happy, he can be one of the greatest centre-backs in England."