How about Bismack Biyombo? Charlotte is at $65MM (assuming Al Jefferson does not opt out) and the qualifying offer for Bismack is 5.5MM. I am guessing they do not even give him the QO, though he is getting some minutes at the end of the season with Jefferson out. His 6'9 height is misleading since he has a 7'7 wingspan, making him a block machine.
I'm not expecting him to play the role of savior. But I would certainly let him be the weak side rebound, defensive presence. At 22 years old, he's still got some development potential as well.