The Citizens have won the league title twice in the last three seasons, although they failed dismally in their defence last campaign.
Despite signing Nathan Ake and Ferran Torres, Hamann feels the Citizens won't improve any more under Guardiola this season.
“I can’t see past Liverpool for the title,” former Reds and Blues midfielder Hamann told talkSPORT.
“Even though it was different after the restart, they were still 18 points ahead of City at the end of the season.
“The thing with Guardiola is he stays at clubs usually for no more than three years.
“I remember in Munich the players said after three years they were exhausted because he demands so much from them.
“I think a Guardiola team peaks after two or three years, maximum. He’s been at City for four years now, so I can’t see them improving this year as much as they have in the last few years.
“So I don’t think they should be a match for Liverpool, nor should they be anywhere near the top of the market in the Champions League.”