De Jong says his Holland can win the World Cup this year - and City the title this season.
"I think we just have to deliver this World Cup," De Jong told City's website. "We have got enough quality to do it.
"As for my club, is there a chance we can win the Premier League next season? Yes, but we'll see.
"That's our aim, but let's just see how the City players settle in again this year.
"Last year was our first season with a new squad. Next season we'll be even better. There is only one goal at this club - to be the best. That's why players come here."