City, who conceded four goals in both their defeats against Real Madrid and Stuttgart in pre-season friendlies, finished eight points behind champions Chelsea in the Premier League last season.
“I am absolutely sure that we are going to have a very successful season. We must bring back the title here to our fans,” the 61-year-old was quoted as saying by Sky Sports.
“We are sure, as I have just said, that we are going to bring it back. We had a good pre-season.”
With the sale of Stefan Jovetic to Inter Milan and Edin Dzeko being strongly linked with a move to Roma, City is poised to start the season with only two frontline strikers in Sergio Aguero and Wilfried Bony.
“We have Kelechi (Iheanacho), that is a young player who I think must find a place here in our squad,” the Chilean manager added.
“(Raheem) Sterling can also play in front. I think we are going to bring in other players but not in that position.”
City, who won the Premier League title in a close finish in 2013-14, kick off their campaign with a trip to West Bromwich Albion on Monday night.