Every decent team needs its creativity to come from somewhere. But there's no set template to say it has to be the forwards, or the wingers or the #10, etc.
Our main attacking options (Martial, Rashford, James, Lingard) lack creativity. As do the fullbacks (AWB and Shaw).
Therefore, the creativity needs to come from midfield.
Pogba gives us some of that, but not enough on his own.
The bigger issue is that Pogba is easily dispossessed and lacks the passing accuracy of players like KdB or Ozil. That hurts our defence quite significantly because it makes it much too easy to bypass the midfield in a single move. Meanwhile, McTominay is good as a box-to-box, but he can't hold the midfield nor create well enough to compensate.
So the obvious solution to our unique set of problems is to play two creative midfielders (Pogba + A.N. Other) ahead of a pure holder (not McTominay) who has decent positioning.
Rice is as good a holding destroyer as you'll find anywhere. His passing may not be creative, but that's not why he'd be bought. He'd be there solely to keep the ball ticking over and to protect his centrebacks.
Also, his long passing seems to be quite underrated on here. I think a lot of posters conflate creativity and passing range, but they're really not the same thing. He can switch the play fairly consistently, which would be another quality to take the burden off Pogba.