City endured a disappointing campaign and were left without silverware for the first time since 2017 but the chairman claims that Pep Guardiola and his players will be desperate to put things right next term.
Khaldoon told the club's website: "We will be back. This season is a season that’s now behind us. Today is a new day. We start working and preparing for next season.
"We will take all the good things and the not-so-good things from this season and learn from it and improve from it and get better.
"I can assure you, this club will do everything possible to come back to the standards that we know we all can achieve and that we know, we will achieve."
The City chief claimed that their problems over the season were caused by their lack of aggression in last summer's transfer market.
He said: "This year is another year where I think when I look back, last summer, we probably should have been more aggressive in some of the changes we needed to do.
"We didn’t do that and that ended up costing us this year."
Khaldoon confirmed that City are aiming to have this summer's transfer business sorted before their Club World Cup campaign begins on June 18.
He said: "We have clearly identified who exactly are the targets, in what positions, and we have our clear number one option, our clear number two option.
"And we’ll go about our business and it will be very clear, very swift. And our objective is to try to be ready with the new squad for the Club World Cup."