I think he's got the ability to be a PL level player. For a 20 year old he looks to be more than decent. Always hard to predict how good a young player will become. What he's shown so far suggests he's not a sure fire hit to be a top PL performer in future years. Equally he's shown enough to suggest that with the right development he's easily going to be PL quality in the future.
Like with any young player it's really hard to predict how it goes from here. I wouldn't currently put him in that top tier bracket of young players in the PL who have immense potential (Foden, James, Saka, Greenwood, Elliott). But maybe that tier below with the likes of Lamptey, Jones, Meslier, Aarons, Livramento, Guehi, Gallagher etc..