Noah really isn't a 4 defensively. Not in Big12-level play.
He'd therefore be competing on our roster with the likes of Egor, Kanon, & Mag. I'm just not seeing minutes for him. Particularly with the crowded minutes at the 2 w Richie, Baker & Knell.
After Mihailo, Kanon's explosiveness clearly makes him a better option defensively as a reserve 4 than Noah, imo. And Keita & Mag are other better routes we could go, too.