Manuel Pellegrini warned that one trophy was not enough after Manchester City came from behind to beat Sunderland in the Capital One Cup final.

City won the season's first trophy through second-half goals from Yaya Touré, Samir Nasri and Jesús Navas, after Fabio Borini's 10th-minute opener. Asked if the campaign would be a success if the club ended with only the one cup, Pellegrini said: "We will evaluate the season when the season ends in May. We won today just one trophy but nobody can think that's enough. Why? I don't think top players or an important group can be satisfied with one trophy."

With City next to play Wigan Athletic in Sunday's FA Cup sixth-round tie, and in a position to make up the six points on Chelsea with two games in hand in the title race, the Chilean's side have a chance to do what no club have ever managed and win all three domestic trophies. Pellegrini said: "We are going to try. It's not easy. We have respect for Wigan. We know what happened with Wigan last year. We are going to try to do it, of course."

City trail Barcelona 2-0 going into the Champions League last-16 second leg in a fortnight so have an outside chance of taking four pieces of silverware. Although winning at least 3-0 at the Camp Nou to continue in the competition will be difficult, Pellegrini believes the victory over Sunderland will help.

"It gives us a lot of confidence because if you have a chance to win a title and don't do it, maybe it stays in your mind," he said. "We are the only club that has the chance to win all the competitions. If you have the chance to do the first, you must do it."

Nasri echoed his manager's view. "We want to win everything. We are going to compete for the league, for the FA Cup and we are going to try to make something in the Champions League," said the Frenchman. "It is going to be difficult but, like I said, I hope this cup is going to bring confidence to the team and we will fight until the end. We are champions and we deserve our victory. It means a lot to our fans; I'm really happy. We are going to fight for the league, the FA Cup and the Champions League."

The Capital One Cup triumph is Pellegrini's first major title in a decade of European management but he played down the achievement.

"For me, it's very important to win trophies but it's also important to be in Europe for 10 years. If you are trying to win trophies in clubs that it's impossible to do it, you are always frustrated," said the 60-year-old.

"I was very happy with my years in Villarreal, my three years in Málaga. Maybe the only club before Manchester City was Real Madrid but I was there just one year. I was absolutely sure if we kept working we could win titles and today we won the first one."

Touré's equaliser followed his winning goals in the 2011 FA Cup semi-final and final. "It was important as well. Samir also scored a fantastic goal. We played well and we deserved to win," said the Ivorian. "We needed to win today. It was very important. Sunderland made it difficult for us in the first half. We deserved it because we played well second half."

Touré revealed what Pellegrini told the team at half-time: "The final is only one game. You need to enjoy it and win it. Today we show we are a great team and we can go until the end of the season."