@Lanolin, I agree it's a weakness - a glaring weakness.
The issue however is if you consider we've already brought in Allen and Doucouré; with the deficiencies elsewhere, it may not be top of the club's list.
Simply, we can't start next season with Coleman, and for all the great work others have done there it limits our offensive capabilities down the right.
Nor we can start next season with Iwobi as our primary option on the right or with only DCL and Richarlison; King may resolve one aspect, but we'll see.
Those two or three areas there should vastly improve how we play and for me the focus should always be on first improving the XI rather than the squad.
While the midfield is a concern, my point is/was that I expect any movement there will be dependent on moving on one of Gylfi or Gomes before we move.
That should be a priority too as your points are completely valid, but as others have said we could have James move there if other places are filled.
So for me, RB and RW > CF > CM in that order. Resolve all of that and we'd be in a much, much better position.