Yaya Toure insists Man City must score at least two goals to progress past Monaco in the second leg
Toure believes Manchester City must concentrate on outscoring the "brilliant" French club in the Principality on March 15 to secure their passage to the quarter-finals because mistakes are inevitable with the way purist Guardiola wants them to play.
The thrilling 5-3 first-leg win on Tuesday means City have scored 84 goals in all competitions this season while conceding 44. Monaco have a similar philosophy, scoring 111 and conceding 45, so it is little wonder Toure says the eagerly-awaited rematch will be another shoot-out.
"With the new manager now it's all about attack," he said. "From the beginning of the season until now, we always attack. Sometimes you can make a mistake but mistakes are part of the game. If you don't take risks the football is not going to follow.
Toure insists Pep Guardiola's philosophy at Man City is all about attack
"We are a team that score goals but we can concede goals too. We are able to score goals because we have the strength up front but our defending was bad.
"The tie is not finished yet. We need to score two goals in the second leg and we have to be careful. We must not under-estimate them and must try to score goals again."
Toure said City's front three of Sergio Aguero, Raheem Sterling and Leroy Sane deserved plenty of plaudits. Aguero scored twice and set up Sane for the fifth goal while Sterling and Sane both scored and made a goal.
"Sterling and Sane were massive," he said. "And you saw Aguero's desire – he was tracking back, going forward and scoring important goals. We saw a real team. We were fighting, running everywhere."
Bacary Sagna insists City's communication in defence needs to be improve
The big negative is City's continuing defensive vulnerability with Bacary Sagna admitting their communication needs to be far better.
The finger of blame was pointed at goalkeeper Willy Cabellero and Sagna for Monaco's first goal. Nicolas Otamendi – described as a "liability" by former City skipper Richard Dunne – was at fault for the second and also conceded a penalty, while fellow centre-back John Stones was guilty for the third.
Cabellero made amends with two vital saves to deny Radamel Falcao a hat-trick – one of them from the penalty spot – while Stones atoned with City's fourth goal.
The defensive problems raise a question mark over City's ability to win the Champions League, a competition which Toure says is "wide open" this season with Barcelona expected to go out after losing their first leg 4-0 to Paris St Germain.
Toure praised City's character for bouncing back from their mistakes to win the game from 3-2 down but warned that Monaco, one of his many former clubs, will still fancy their chances.
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"Monaco were brilliant," he added. "People underrated them, but they are young, they have pace, they have desire, they are always looking to attack.
"They have a magnificent youth academy and they have guys working very well with the kids. They are not afraid to attack and not afraid to play 4-4-2 against a massive team like City. Full credit to them.
"After going two down we continued to believe. An inexperienced team maybe would think the game was done, but we have a lot of experienced players in our team like David Silva. We have been used to coming back in games and we showed a lot of desire and hunger.
"After the game my wife called me and said we were looking young and the team was brilliant. It was unbelievable. That is why I want to stay in Europe [when his contract expires this summer] and just enjoy the game."
City are likely to be boosted by the return of centre-half and captain Vincent Kompany to provide some defensive stability for the second leg.