Keita makes those guys better, particularly Demin, as he’s a vertical threat in the pick and roll.
Then you go Fouss-Mag-Baker off the bench and let Fouss get some easier matchups (it seemed like most B12 teams played their big defensive centers at the start of game and subbed in a shorter guy later on).
Either way I think we see Fouss-Mag and Keita-Catchings used a lot together