City travel to Norwich on Saturday and can still win the FA Cup, Capital One Cup and Champions League this season.
The Argentine star said: "We are disappointed with the game we played. We didn't play our best and we must be honest, it was one of those games that we didn't do anything.
"That was an important game to get three points and go back top of the league.
"But we need to think, to be positive. We need to review the game in the week just to see all the mistakes we made and try to not do them again next game.
"We still have a chance in four competitions so at the end it's important for this team. We have big games coming in February so we need to have a good rest and be ready for Saturday - which is another tough game at Norwich away."
For breaking stories and all the great banter like us on Facebook: facebook.com/tribalfootball