The 47-year-old faced speculation about his managerial post after it appeared the Citizens were going to miss out on the Premier League crown.
However, the Eastlands outfit ended their 44-year wait for a top-flight title courtesy of a victory on the final day of the season against Queens Park Rangers.
Mancini signed a five-year contract at City over the summer, and the Citizens boss is now keen to build on their success and win more silverware.
“Last year, I was very close to seven or eight teams, but I preferred to stay here because I’ve worked well here for three years,” said Mancini.
“We won three trophies in three years and I am very happy, we work well. Now, the next three or four years will be very important to us.”
He added: “I signed a contract for the next five years because I believe in this squad and I can work with serious people like the owner and chairman.
“To work with these people is fantastic in football – it’s difficult to find people who work well with the manager. For me, it’s a fantastic situation.
“Now we have a chance to build a stronger team.”
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