Boss Roberto Mancini has invested £75million in the squad this summer, bringing in Jerome Boateng, David Silva, Yaya Toure and Aleksandar Kolarov, and is still pursuing Inter Milan striker Mario Balotelli and Aston Villa midfielder James Milner.
"I can say for certain that the winner will be one of these teams," said the former United and West Ham forward.
"Our aim should be to improve bit by bit, but we know we must fight for the title.
"The same teams will be there and even though we have brought in new players, other clubs will match us.
"We are right up there with them. We have strengthened and we are stronger.
"There is no great difference between all the top teams now.
"We'll see whether we are good enough. I hope we improve on last season and can challenge for the title right to the end. That's what we want.
"But the first challenge is to qualify for the Champions League. I hope it won't escape us this time.
"Five years is a long way off, but I think we will have won the league title by that time."