Manchester City's Spanish manager Pep Guardiola attends a press conference at Manchester City's training ground in north-west England on March 5, 2024, on the eve of their UEFA Champions League Group round of 16 second-leg football match against FC Copenhagen. (PHOTO / AFP)

MANCHESTER, England - Manchester City may be 3-1 up in their Champions League Round of 16 tie against FC Copenhagen but manager Pep Guardiola has warned his defending champions against any complacency in Wednesday's second leg clash at home.

City, second in the Premier League, face leaders Liverpool on Sunday who they trail by a point but the Spaniard said the focus remained on reaching the Champions League quarter-finals.

"In football, details make the difference. Everything can happen," he told reporters on Tuesday. "We concede a goal in the 85th minute ... concede two, we have to go to extra time.

I have a lot of respect for Copenhagen. They defend, they have a good system ... they're really well organized

Pep Guardiola, Manchester City manager

"I have a lot of respect for Copenhagen. They defend, they have a good system ... they're really well organized," he added.

Guardiola cited the example of RB Leipzig, whom City beat 3-1 on the road in the group stage but then went 2-0 behind at home before fighting back to win 3-2.

"Two mistakes, zero two," he said. "If we (conceded) another goal we'd be second in the table."

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City striker Erling Haaland echoed his manager's sentiments.

"I haven't thought of (the Liverpool game) until you asked me now," he said.

Manchester City's Bernardo Silva (left) fights for the ball with Copenhagen's Elias Achouri (right) in action during the Champions League, Round of Sixteen first leg, soccer match between FC Copenhagen and Manchester City in Copenhagen, Denmark, Feb 13, 2024. (PHOTO / RITZAU SCANPIX VIA AP)

"I am focused on Copenhagen. It's going to be a huge game against Liverpool, we have to be ready for the game. We have to be brave and play at our best."

Guardiola said the team selection for the Liverpool clash will depend on the players' fitness after the Copenhagen game.

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"Selection depends on the players, on how they feel. The competition is so important because in football everything can happen and you have to be aware of that," he said.