That might happen in this draft. But it is not very common for any player taken in the top 10, that also has started for 3 seasons, or 2 seasons, to just be sent to the bench, without player remorse.
I mean I could see a scenario where they draft Green as the BPA, with the idea to play him as the lead guard not next to Garland.
He already is just as good, or better than Garland as a scorer, and needs the ball to be effective. They can just let him do like KPJ is doing in Houston.
Sexton and Okoro also have versatility on or off ball but Garland maybe doesn't.