Derrick's averaging 16.8 points, 8.8 rebounds, 2.1 assists and 1.8 blocks per game since Rudy was injured. That about what he's put up fully healthy and starting in the past. I think this is his ceiling stat wise.
How much will it cost to extend him?
IIRC, you can't extend a player mid-season? I'll have to look that up.
To answer the question, it's really hard to say, especially since there are still so many kinks to work out with the roster and offense.
What I do know is that if Favors is finally settling in on being healthy (S/O to the seemingly-improving medical staff) and we're seeing who he is, the Jazz need to figure out how to make him shine, make him feel valued, and try to keep him (at a salary that doesn't cripple).
The starting point is that Favors is starting and that Rubio isn't allowed to share the floor with both Favors and Gobert. And it goes without saying that Gobert starts, so Rubio comes off the bench and gets what minutes he can with only one of them on the floor, and there's at least one of them on the floor at all times. Closing games, you go with the flow and see what's working. Sometimes that will be both, sometimes one or the other. But you generally try to not have them share the court.
Mitchell/Rubio
Hood or Burks/Burks, Hood, or
Mitchell
Ingles/Sefolosha/Hood/
Favors/JJ1/JJ2/Ingles
Gobert/Favors/Udoh
In this scenario:
-SPACING. Spacing, spacing, spacing.
-Rubio would have more room to operate, would have less pressure, face less scouting, and operate on a milder incline in acclimating to the offense and personnel, thereby rehabilitating his play and his value and ultimately either finding his way on this roster or off of it.
-Mitchell gets the reigns and plays what I believe is his best role and the role the Jazz most desperately need someone to fill moving forward. I am not one of those that is concerned with Mitchell's size on the wing as he is incredibly long, built, and gritty. However, as a PG, he's a beast, and it increases the Jazz's switchability (which when Favors plays as the 5, I think the Jazz could seriously explore the switching of everything).
-Opens up some opportunity for Burks and Hood if their recent play starts to sustain (and are both healthy, naturally).
-This isn't a point of emphasis for me and is rather tangential, but I would really like to see Ingles play some more 4 with Gobert. I think that would be crazy lit.