I don't see any star quality or potential in Rusty Doris tbh. He just strikes me as a hard-working player with a bit of talent - nothing special. Hamed Traore was playing in midfield until January, until Sassuolo sold Boga (their de facto winger). Once Boga was sold, Traore was thrust into that role, deployed as a winger out of necessity. I don't just look at stats because they can be misleading. If I looked at Stats, Ronaldo, Messi and Lebum would be goats, but no one will ever convince me that they are.
If I judge by talent, potential and ability, Rusty Doris is the 5th best player on that Sass roster. Fratessi is a more interesting prospect, Scum-Eh-Ha-Me-Ha has greater potential, and Traore and Retardi are already better players than he is.