Manchester City wing-back Oleksandr Zinchenko insists defeat to Manchester United was just a blip.
Indeed, Zinchenko expects a response in Wednesday's clash with Southampton.
The left back said: "We have to win the next game, we have to be more focused. We are not allowed to go back. We have to go forwards.
"We are still playing in all competitions. We want to win everything this season and I hope we can do this.
"We are still alive and we can (afford) mistakes but we are going to come back stronger, I am pretty sure of that."
He added: "To concede in the first minute is not easy to come back from.
"Afterwards we played much better than the opponent. We controlled the game, we created enough chances but we didn't score.
"United are also one of the best teams in the world, they have unbelievable players and they organise well defensively."