David Silva says there is no reason why Manchester City can't challenge for this season's Champions League despite a battle to make it out of the group stage.
City have taken just four points from their first three games in Group C and face a fight to secure a place in the knockout stages.
They host Barcelona on Tuesday night just two weeks after they were beaten 4-0 in the Nou Camp, and Silva says they cannot afford to give top sides any opportunities but adds that if they cut out the errors, they are capable of beating any team in Europe.
"We knew that it's difficult at Camp Nou. I believe that we were playing well until [Claudio Bravo's] red card," the Spain international told reporters. "Even the first goal was a slip. We were playing well, but in the game if you slip and then get a red card, that makes its mark. I believe that until that moment we were playing well.
"I think you have to go step-by-step. But if we correct those issues and we concentrate throughout the games and don't have any distractions or any errors, I believe that we are going to challenge for everything. But you have to go little by little.
"We are going to try what we did well in Barcelona up until the red card. At home we have to do the same.
"In football you can always win and also you can lose. We are going to try to win, we are playing at home and we need the points. We know that they're a difficult opponent but we're going to be 100 percent ready."
City ended a streak of six games without a win at the weekend with a 4-0 victory over West Bromwich Albion.
Silva insists City were playing well throughout the poor run but said it was important it ended ahead of the visit of Barca.
"It was time to end that run," he added. "I believe that we have had bad luck in some games, we have missed some chances, and also missing two penalties in one game. That's football. Now we have ended the run and we are happy.
"As well as the individual errors at the back, we missed two penalties, that's decisive. We've also not been able to find the last pass and that's also been important. I believe that across the season things like that are going to happen. As soon as you can put an end to that [bad runs], the better.
"I think the dressing room has been fine, it's been more united than ever. We are doing things well but they weren't turning out as we wanted.
"In key moments we have made mistakes and it's not that we were doing badly, it's just that we have made mistakes, and in the big games those details are decisive. We have to learn from that."