Speaking ahead of the 7:30 GMT kick-off, Guardiola addressed his squad situation, saying: "We can only focus on ourselves for the rest of the games ... I don't know what is going to happen. Today is how we behave against Forest."
The City boss also praised striker Erling Haaland, noting: "Haaland has made an incredible impact since he arrived years ago. In the first quarter of this season he was outstanding. We need everyone. Everyone has to be ready."