However, Guardiola refused to criticise Klopp's spending, saying it is natural that others will want to bolster their squads after City won the 2017-18 Premier League season with a record-breaking 100-point campaign.
"Every club does what they believe. I understand the money completely," said Guardiola in a pre-match press conference.
"Liverpool believe they need these players and spend this money so I'm not judging what they're doing. If they decide that then it's perfect for them. I don't like when my colleagues talk about me.
"We increased the level of the Premier League and that means the other ones want to do better and better. Always Liverpool is a contender with the history they have. We'll see on the pitch."