Stacked at CB? With what exactly? It's also not the matter of who we want but who we can get, days of having our pick of the players we want are long gone, we have to wait to be able to get the right man. No one who was playing CL would have come, not at a decent price anyway, Maguire was at a lower ranked club, not too much in wages so we went for him. Next transfer window a midfielder we'd like to buy might present himself, we'll react then. It's a matter of having to be realistic. Klopp (and I hate to type his name at this point) didn't get all the players he wanted right away, it was Mane first, then Salah, then van Dijk...
Wan-Bissaka and Maguire are decent buys on their own, but not enough to turn it all around, we'll need some other changes too.
You can love or hate Solskjaer's manager's skills but you can't say he put the club in the worse financial situation than it was when he came in. His buys were not extravagant, and, if he does leave, he won't burden the next manager with even more inflated wage bill like Mourinho left for him. I know it's not good times for us, but there are some positives about the club as well, even if they're not as evident at the first glance.