@Cassidy I agree with you, and below are my thoughts on our CBs and the problem we will have of transitioning from a team that has been prioritizing defensive stability rather than offensive gain.
Ole played a high press for several years at Molde to good success and understanding the managers play style is key to understanding the issues we will face with two CBs who are not adept at dealing with fast transitions in defensive transition playing in a team that has sacrificed defensive stability for offensive gain.
We have been playing a system for many years now that catered to our backline from Van Gaal to Mourinho to Solskjaer that had us defending in numbers with midfielders, fullbacks all helping the CBs. We were playing like how Sean Dyche sets up at Burnley but with superior players. Our good defensive record isn't a testament to our CBs but rather the collective effort in a setup that has prioritised defensive stability over offensive gain.
Now Solskjaer has almost got his attack to a level that he probably feels he can play the high press to a good level against the so called cannon fodder. But that also means Lindelof and Maguire won't have the protection from the likes of Wan Bissaka and Shaw and will have to defend in isolation with help from a DM (Matic) who is also weak in defensive transition in a high risk approach. And it will be this approach that will filter out the weak IMO.
We can't compare ourselves to City or Liverpool defensively because both those teams play a style that puts their CBs in high risk situations due to their high risk front foot approach. Liverpool's CBs defend from near the half way line at times and have the defensive and physical capabilities to do that and it allows their attack to throw caution to the wind. They also have midfielders who are far superior to Matic in defensive transition which is also a big advantage.
What we need is two players who will give us defensive balance in defensive transition in such a aggressive high risk approach. A DM with defensive nous and the physical capabilities along with a CB who has the ability to play in a high press. There's many options out there but I'd personally like to see Zakaria and Konate targeted in the window because both excell in the high press under Marco Rose and Julien Nagelsmann.