In short term I'd just call Luiz off holiday.
It's not ideal but Everton played Richarlison today and he scored.
Luiz even with his inconsistancy is just a higher class of player compared to Nakamba.
He was our DM from September-January last season and indeed in the good run in to stay up so has shown he can play the position well for months.
I certainly agree there's 0% chance after how it looked today we won't sign another CM in the next three weeks. Just not convinced Ward Prowse is the answer to all our issues there.
For what we'll pay to sign him there's many midfielders in europe who can press and score the odd free kick or indeed score from open play for less than 40m.