To me the issue is Murray needs to be played at shooting guard he is not a PG I am ok handling the ball on fast breaks but half court is where White is at his best as a pure PG.
Murray's future in the league as a good player comes from him playing the point. If he plays the 2, he will be an undersized 2 that is an iffy shooter. If he can learn to shoot, he would be an undersize 3&D. He is younger than White and lost a year to injury plus another few months of development due to Covid 19. I strongly believe he will be a good starting point guard.