Talentwiss I think he has more upside than Nolito. Nolito was quite one dimensional and laborious until his Celta move where he was 25/26.
Seems to have the right attitude and works incredibly hard. When you think of our AML void there is definately a window for him to break with the right mixture of talent, hardwork and luck (like Pedro did).
Him, Cucurella and Alenya are the closest to our first team from the B team right now, and should all be getting Copa chances and the 6th CL game. Maybe Cucu less so simply because Digne needs more minutes.