I don’t know if you can ever definitively say any third year guy has peaked but I can say its time to let someone else find out if they can straighten out his issues…
Its all mental stuff too. There are smaller Centers in the league. C is highly technical, Green loses focus or missteps and doesn’t recover correctly and gets beat , then lets it get to him and then either commits a stupid, unnecessary penalty or has a total brain fart with the snap.
Its no different than the year he started… though to his minor credit.. he has taken a ton of preseason snaps and has yet to totally come unhinged and take an unsportsmanlike conduct penalty yet… so some progress there