Cuellar insists the mood has not been dampened by defeat to Manchester City.
â€śThe confidence in the team is very high,â€ť said the Spaniard, who will be playing in his first North East derby.
â€śWhen you lose everyone is unhappy but if you look at the table and you look at the games we have played before that you donâ€™t have to be scared or lose any confidence because the team is doing very well.
â€śYou have to learn from your mistakes, but in Spain we say you cannot take your skin off just because you make a mistake or lose a game.
â€śWe were doing so well before and when you make a mistake you have to learn from it and make sure you donâ€™t do it again.
â€śBecause weâ€™re playing Newcastle next we donâ€™t have to prepare too much.
"Weâ€™ll all be ready and waiting for the game.â€ť