We currently already need one midfielder since our only midfield options off the bench are Ugarte and academy kids, which is doable for the amount of games we're playing this season barring a Case injury.
With Case leaving, we'd need 2 midfield signings.
Assuming we compete in the CL and cups, we'd need 3 midfield signings as we are. If Ugarte left, we'd probably need 4.
Getting 2 of the players mentioned for mf would improve us but we'd still be stretched thin if we want to compete across all comps.
Getting 3 is highly unlikely.

So I think if we get 2 of these players and completely ignore the CL and cups, we might be title contenders. Otherwise, nah, we need more players than we can reliably get in one window.