If the rebuilding process is the real masterplan as the FO says then I will bet my cards on Corbin improving. All C4 improved vastly so I wouldn't blame Corbin for stagnating, at the very least, any development for young guys. He can stay here while the C4 is coming along and when they are there to be competitive and Corbin can't do a good job, fire him. It's simple. Jazz doesn't lose much money this way and C4 improves as we all want.
This season was mostly a wasted season anyway. FO didn't want to lose the winning mentality and probably wanted more playoff experience. This is the year where we should really see young guys taking more responsibility, especially Hayward and Favors.