The problem with signing someone to cover Rodri is that they have to be alright with being a bench player or it means dropping an attacking midfielder to accommodate someone next to Rodri. It’s a difficult one
I could be wrong but Kovacic doesn’t strike me as a player who demands to be played every match so he could be the one to drop out if we get a starter.
Personally not fussed as I love me some Kovaball