Sadly we wont be seeing the Ngannou fight and even if he fights him, there is no way Ngannou is going to beat Jones.
To be honest, I'm also really looking forward to that fight. But it seems impossible. And I'm not sure that Jones will be able to beat Ngannou. Gane is considered one of the best natural talents in the heavyweight division because he is blessed with a strong physique and abnormal speed. But that's not enough if you have to fight a fighter who has experience in ground fighting. Gane started his MMA career with Muay Thai and wrestling is still his biggest weakness. This could be seen from how Jon Jones took the fight to the ground and there was nothing Gane could do. But the case would be different if Jones fought Ngannou. A fighter who has extraordinary power and excellent wrestling abilities. This was seen during his fight with Gane. So the most interesting fight for the heavyweight class at the moment is of course Aspinall vs Jones, or Gane vs Pavlovich.