The striker, who scored in Tuesday night’s Champions League draw with Celtic, is the natural replacement for the suspended Argentine and could lead the line for Saturday’s trip to champions Leicester.
Guardiola insisted though he has plenty of options for the forward position.
When asked whether he felt the Nigerian could step into Kun’s boots and continue his impressive scoring run, the City manager replied: “Yeah. He is our striker – the only one I have.
“Always, he has a good sense of the goal. Of course, we need it – but we can also play other players in that position.
“He is a player that should play but we have other options in the way we can play.”
With Gabriel Jesus set to arrive in January, Guardiola was also questioned as to when the Brazilian would be available for selection.
“When he arrives here with us, first we have to help him to settle in England – to find a house with his family, to get him involved in the team and get to know him (and him us) as much as possible – and then play,” he continued.
“I never believe in putting responsibility on the shoulders of strikers to score goals. I try to involve them in the way we have to play – that is my target, especially in the first year – and we will see what our level is.
“Always, we focus on the way we play. Results are just results.
“I am confident when I see the team play better and better every day and play like I want. I want to feel and enjoy seeing my team play.
“After the results, we can make the sentence. I want to feel something. I don’t feel anything for numbers – yes, results give confidence for the future – but I want to see [performances].
“It is difficult here with many circumstances but I will try again and again to make the team better.”