Samir Nasri has told Manchester City they have to tighten up at the back, warning that their defensive frailties could be particularly costly in the Champions League.
The France international was on target as City beat Viktoria Plzen 4-2 in the Champions League on Wednesday to take their tally to 41 goals in 10 games at the Etihad Stadium this season.
And manager Manuel Pellegrini was critical of his side’s defending, describing it as "very, very bad."
Nasri, 26, said: "We are scoring a lot of goals, but we cannot score four goals every game. We need to improve, as well, how to defend as a team. We conceded two goals. The last game in the Champions League we conceded two as well, and [against] Munich three.
"We need to improve, as a team, how to defend, especially in the Champions League. Then, if we can continue this form, it will be amazing."
City, who have already qualified for the last 16 of the Champions League, will need to beat Bayern by three goals at the Allianz Arena in their final group game to top the pool.
And Nasri said: "We are going to go there and try to win the game because we want to finish top of the group. The first objective was to go through the group stage because the last two years we struggled, but now we are going to go there and play without pressure."
Nasri maintained his fine form with a man-of-the-match performance against the Czech champions, and said he is especially contented at the moment.
He added: "It is good to score, especially as it was my 100th game at Manchester City. I feel great. I have a good relationship with the manager and the players trust me. Everyone... the fans... I feel love. I just play football and try to do my best."