Not playing Burks
I'm guessing KOC has asked him to play Bell & Miles extended minutes lately to increase their trade values.
Keeping Rookies' minutes to a minimum
Team harmony. Boler said something about Big Al staying back after practice showing Kanter footwork, post moves, etc. Now that would not happened had Al not been given the respect he deserve in starting & playing big minutes. The fact still stands - he's the most expensive/experience/productive player on this team and he needs his minutes. Denying him that is bad for team chemistry/harmony.
Besides, it's a fact that both Kanter and Favors are productive and improving regardless of the kind of minutes they've been given so far. One could only assume that their production would increase given more minutes later on.
My prediction? Big Al is a loyal guy. He'll play out his contract and take a lesser role & playing a back up role & mentoring these young guys (Kanter/Favors) through the next chapter of Jazz's history.
I wish Ty would play our youngins' more as well, but as it stands, we'll probably have to wait a bit longer for that.