Off the top of my head Varela, Ederson, Barella, Luiz, Ricci, Gibbs-White, Baleba, Rovella - theres 8 immediately and with our scouting network which has far more knowledge than you, I or anyone else on an internet fan forum, Id wager they can add another 10-15 names there who would be far better options than what we currently have in the engine room.
We seem very good at locating/identifying young centre halves - nobody had heard of the 2 linked with us until this week for example - it isnt a reach to think the same could be done for midfielders who would improve us.