His game is fundamentally Dutch and it's no surprise he's compared to Dutchies more than anyone else thus far (de Jong and Seedorf pop up regularly despite the contrast between their games); would be delighted if the path that route leads to continues - the Milan version of Seedorf...I've been thinking maybe Koke as a comparison?
Hard to say how he'll turn out because the body you have and the attributes it gives determine what you can be ultimately. If he stays how he is with no power, athleticism buffs, it's the Spanish line of playing: being elusive and constantly on the go for ceaseless combination plays/rondos; if he gets that physical beast element to his game, he will most likely be a lot more maverick and able to simply go it alone as and when he pleases, which is what delights us in so many of those superhero midfielders.
He's a very exciting prospect to follow and watch develop - been the only shining beacon of our season, for me - because of how good he is so young and how much room for every element of growth there is in him. Personally, I'm most looking forward to his engine improving because at that point, he won't have to conserve energy or play as within himself as he's doing. When he can work 2-way all game long with no issues, I expect his influence on games to be considerable, like how Modric was, but obviously not with that kind of tank! As that's not possible for him, or most players.