Given he has 18 months left on his contract, I think there is more and more chance of him running it down and goes for free for a mega salary/signing on fee from new club with zero transfer fee.
The so called extension is being worked on for like 18 months now? wonder how these meetings end usually, "lets wait couple more months to decide".
clearly once heavily rotated and kind of lost his regular starting spot due to form he will not sign any renewal and his form generally hardly a reason for him to be a regular starter ahead of Foden for example.
would playing off of a dominant striker help him? maybe yes, but that goes for other creative players as well finally having a focal point who gives confidence to teammates that he will convert most of those fucking chances we keep creating and missing due to lack of killer instinct.