Manchester City manager Pep Guardiola said his side's performance in the 1-1 draw with Liverpool gave him "one of the most special days in his life".
Guardiola has won two Champions Leagues, six domestic titles and four cups in his stellar career.
But he said he took as much pleasure from the way City responded to the "sadness" of their midweek Champions League exit in Monaco.
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"I am so proud," he said. "This is one of the most special days of my life."
Report: Manchester City 1-1 Liverpool
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He added: "We lived a tough two days after being out of Champions League. We were sad.
"Liverpool had all week to prepare and they always fight until the last moment.
"That is why I am so happy. More than ever I am willing to help the club take the next step forward over the next years if they want to stay with me."
The 46-year-old refused to say whether that meant he would be prepared to extend his contract, which still has over two years to run.
His side had to respond after falling behind to James Milner's 51st-minute penalty.
Aguero equalised on 69 minutes when he turned home Kevin de Bruyne's low right-wing cross from six yards.
It was the Argentina forward's 25th goal of the season and Aguero could have had another in the final minute when he volleyed over from the edge of the area.