We have plenty of 8s. It's the 6 that's the problem. Said it in the other thread, I don't see how we can do it without Xhaka. Torreira has never looked like that player to me, and everyone else would need to be essentially reinvented to play the role.
Most important signing we can make atm. Even if Xhaka stays, we know he'll struggle. I can get over the erratic decision making in our current state, but the athletic concerns are hard to reconcile with. Ndidi while keeping Xhaka would be ideal in my mind.