Liverpool if they want to buy a new midfielder, they have to consider the position of the player and consider the costs they have to pay because if they only buy players without looking at those two factors, they will lose, the transfer market still looks very far at the beginning of the year so maybe Livepool can get even better players for a fairly cheap price.
Liverpool don't need to rush to buy new players, in midfield they already have Thiago, Fabinho, Jordan Henderson, Fabio Carvalho, and several other names who are capable of playing in the midfield position. Actually, judging from the depth of the squad, Liverpool already have good players on all fronts. As a result of their inconsistent performances at the start of the season and several injured players, Liverpool look like a weak team that is easy to beat.
Victory over Manchester City can be a turning point from Liverpool appearance so far, Klopp must maximize the players he has to improve Liverpool's appearance. What Liverpool are experiencing now is not a lack of quality players in their squad, but they are not well connected to one another.
But there are still some midfielders who are still injured and have not recovered but indeed for midfielders I think Liverpool is still enough with the current position so Klopp can still use some of the names mentioned, but Diogo Jota is back on the list of injured players after the match yesterday against Manchester City and it is likely that Carvalhho will be pulled back as a backup striker later which is needed by Klopp.
I think yesterday's victory can be even more optimistic with its solidity, therefore Klopp will try to maximize it.