Why haven't the Nuggets extended Warkentien?

If the Nuggets don't extend Warkentien then they fail. Warkentien is the best GM in the league. It would be a mistake not to resign him.  The Nuggets biggest free agent this year could be Warketien. I mean, he only built a championship contender without the checkbook opening up.

From what i've heard the Nuggets haven't even talked to him about an extension. Does anyone know why?