He will be transformative as would any physically stronger DM, because he’ll (or whoever we sign) could allow us to transform our game play to 4 at the back with a protection in front. I’d argue that we’d need one or two creative players besides him to bring the ball forward.
About being an upgrade, for me it’s apple as and pears, Rice and Jorginho are totally different type of players, so one cannot be an upgrade of the other. Now, the question is whether the system we would play with a player like Rice is better than the system we play with Jorginho or not, that’s for the future to see. But I do believe that if we want to challenge for the PL, the type of player Jorginho is is not appropriate now a days. Another thing is the CL football.