MANCHESTER, England -- Pep Guardiola will have to shuffle his Manchester City side with Sergio Aguero banned and David Silva set to miss Saturday's game against Bournemouth.

And the City boss admitted that he is unsure whether Germany international Ilkay Gundogan is able to play again just three days after he made his debut for the club.

Aguero, who scored a hat trick in Wednesday's Champions League victory over Borussia Monchengladbach, will serve the second match of his three-game suspension for elbowing West Ham defender Winston Reid.

Silva was in the original lineup to face the German side on Tuesday night but was missing when the game was delayed 24 hours after picking up a minor muscle injury in training.

He was replaced by Gundogan, who made his first appearance since recovering from a dislocated kneecap he suffered at former club Borussia Dortmund in May.

"I think tomorrow [Silva] will not be able to play," Guardiola told a news conference. "I haven't seen the doctor and David, I don't think it's a big problem but it happened two days ago so I don't think he will be able [to play].

"We had for the weather conditions one day more, for our regeneration after the Manchester United game, and now we have one day less for our regeneration, but it is what it is. The schedule is the schedule, when you are in a big club you have to get used to playing every three days, it's a good mentality."

Asked whether Gundogan would replace Silva, Guardiola added: "Good question, I don't know, I'm thinking about it since two days ago.

"He played good but we cannot forget that he comes from a long-term injury. We will see tomorrow, today we are going to see the doctor and we will decide."

Ilkay Gundogan may not be available for City this weekend after playing against Gladbach on Wednesday. Getty Images

Kelechi Iheanacho is expected to continue deputising for Aguero while £37 million new signing Leroy Sane could come in for his first start after coming off the bench for City's last two matches.

However, Vincent Kompany is still waiting for his opportunity as he continues his recovery from the thigh strain he suffered in the Champions League semifinal defeat to Real Madrid in May.

"He's close but not yet, but he's close," added Guardiola. "We need him. It's a lot of games and we need all the central defenders, strikers, wingers, attacking midfielders, holding midfielders, full-backs, goalkeepers -- we need everybody."

Guardiola has told his players to forget about their perfect start to the campaign after winning their first seven games of the season and opening up a two-point lead at the top of the Premier League.

And he warned that Bournemouth are a dangerous opponent and has been impressed by what he has seen of them this season.

"There are many, many things I like a lot," he added. "I'm not thinking about what we did in the past -- our four games in the Premier League, our three games in the Champions League. I'm thinking about what's going to happen tomorrow -- what I have to tell, what I have to do, what do I have to train for them to be ready for our game

"The Premier League is so difficult because you play so many complicated games. Any team can beat you and I felt that. Tomorrow I am going to feel that.

"I saw the game against West Ham and they were unlucky. They played really, really well against [Manchester] United in the first 30 minutes until the [Juan] Mata goal. They were perfect on the pitch."