We have McCloughlin, Pratt, Atcheson, Miller, Pickering fit who have all played at CB sometime or other. One way of alleviating any issues back there would be to not play 5 at the back every single game no matter the opponent.
However, if we are determined to keep the current formation we currently have one striker to cover 2 positions if you're going to refuse to play Tyjon and Gueye, and we arguably don't have a single player capable of playing either wing back position effectively with Hedges and Alebiosu absent.
Now, if we pull in a couple of strikers and a wing back in before the Hull game I'll concede it's a redundant argument, but as others have pointed out we need to ship 4 or 5 players with likely few suitors out the door before we can do that without likely overloading our player budgets.