The Citizens are heavily linked to Tottenham star Harry Kane all summer, but the London club are holding firm on their stance surrounding their star striker.
That means City may be unable to secure Kane before the August 31st deadline. Should that happen, manager Guardiola is not sure if they will chase an alternative.
"When we decide to not sign a contract for Aguero and people say what we're going to do, I said many times: it'll depend on the market, the options," Guardiola said his side's 5-0 win over Norwich City on Saturday.
"Maybe we buy or maybe we'll not. We still have 10 days in the transfer market, we're going to see what happens, and it depends on that what decision we are going to take.
"If the team is the same one, I said before the 5-0, I'm more than pleased with the team. I know them really well, they know me really well.
"We put in incredible energy this week to realise that still we want to be there, to try to compete with the good teams in England and good teams in Europe.
"We want to be there. The group of people are fantastic, the players have incredible quality, so I cannot complain.
"I've never complained since I arrived day one, I will not do it now, but of course the club has an obligation, the duty to look forward, to get better, to feel we can still be there with a tough Premier League and this is what we are going to do."
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