He is going to be on the end of the bench for a couple years. But the ideal scenario would be for him to play as the PG on offense and SF on defense. For that to work, you put him on the floor with two wings who can guard the opposing PG and SG on offense. So you could have Green or Mills guarding the opposing PG, and Green or Kawai guarding the opposing SG.
This guy gets it. Kyle Anderson is a Point guard, in the vein of Magic Johnson. Who could, and did, play all 5 positions on the floor.

Can we use him as a PG? I dunno, but this is really going to be interesting to watch.