I think Jose prefers round pegs in round holes no matter how shit they are.Ndombele can be good DM if he's fit to play. He actually looked pretty good defensively last time he played.
And regarding RB, any backup we have in the bench can replace Aurier right now and it would be an improvement. Tanganga, Sessegnon, or Foyth. Even Sissoko would be a better RB than Aurier.
problem is Jose never give these guys chances no matter how bad Aurier plays.
He’s not really a tinker man