I think he is very talented in terms of dribbling and ball control but in recent times whenever former footballers are asked about future balon d or contenders,his name is always mentioned but he is 23 years of age now and still he is not a starter for man City ,his best position is up for debate(rw or advanced 8)and while he has put in some good performances for city I have not seen enough from him to say he will be a future balon d or contender consistently. He seems like Bernardo Silva level player to me which is a very good player but not a balon d or contender(consistently) player.He also resembles him in style quite a bit.
Foden is a good player with a great skill set he need to drastically improve his finishing game if he wants to progress to the next tier though. Creatively I think he will get to a similar level to Silva but not KDB.
He strikes me as a Grealish type player that would shine personally in a team with more freedom rather than the system managers like Pep. Not saying they wound be successful as they clearly are but in terms of personal development