Guardiola: City strikers must be ruthless

City, who lead Manchester United on goal difference, have been in impressive form in recent weeks, thumping Liverpool, Watford and Crystal Palace in their past three Premier League games by an aggregate score of 16-0.

Combined with a 4-0 thrashing of Feyenoord in the Champions League, and a more modest 2-1 victory over West Brom in the League Cup, City's momentum since the last international break has been formidable.

The results have pleased manager Guardiola but he is still not satisfied, as shown in the visible signs of frustration he displayed during a scoreless opening 44 minutes of Saturday's 5-0 defeat of Palace.

He says his players must keep gunning for goals.

"It is the best way to respect the opponent and the fans, everything," he said. "We play to do it as much as possible.

"People expected before we arrived (on Saturday) it would be easy, but you know how complicated it was in the first half. It's good but the way we play we can improve in many, many things and concepts."

The key to retaining sharpness up front could be the fierce competition for places that now exists among City's attacking players.

The impressive Gabriel Jesus was the man to sit out at the weekend as Leroy Sane, one of last season's stars, was handed only his second league start of the campaign.

The German made the most of the opportunity, scoring the opener and providing an assist for another player who is having to get used to rotation, Raheem Sterling.

Sergio Aguero was among the substitutes for last month's trip to Bournemouth and summer signing Bernardo Silva has so far been used sparingly.

David Silva and Kevin De Bruyne have been firm fixtures but even they are well aware of the need to stay on top of their games.

"They know that," said Guardiola. "It is not necessary to tell them. They feel it. They feel the team-mate alongside them, they say 'wow'. It is good.

"That is the best way. You cannot play the same players (every) three days for 11 months. We need the next guys, they have to play good. If you want to win they have to have the best performance.

"We need (Ilkay) Gundogan to come back to put pressure on Kevin and David. Fab (Delph), playing left-back, was outstanding. He is a midfield player who doesn't lose the ball easily. Every player has to push the other one."

City rejected an Arsenal inquiry for Sterling before last month's transfer deadline and Guardiola remains equally dismissive following fresh reports of Gunners interest.

Guardiola said: "There is no question of that. He is not going to move. He is going to stay here."