He's not an upgrade, he's just different. Which is why it makes more sense than Wan Bissaka who is basically Walker but goes to ground more because he doesn't have the physicality.I'll give him dribbler and crosser not necessarily passer though.
Like I said to Birch, I'll grant he is a technically superior player in the most technical sense of the word. He'll be an upgrade on early season Walker, not late season though.