Since the Nuggs appear unwilling to spend a lot of money on a 4th Big man, what about picking up a D-Leaguer like Dwayne Jones? This guy is tearing things up in the D-League, is 6-11, athletic, averaging 18 points/15 rebounds, and could be an adequate 4th Big in a pinch. He looks like he will be on an NBA roster next year. Take a look:

http://www.nba.com/dleague/playerfile/index.jsp?player=dwayne_jones