He would SOLVE ALOT, the main issue in this team is midfield.
I dont think it is anymore, I think the flanks are a much bigger issue. Just this preseason I saw multiple instances where one of our midfielders made a progressive pass out wide only for Sandro, Danilo, etc not advance the ball or just straight up pass it back. Kostic and Cuadrado should help when they're playing, but they cant play every single game so they will be exposed when only one of them is out.
SMS seems like a luxury signing at this point. Obviously it would be great, but the focus should be on those other positions imo