If Utah signed a d-leaguer w/no NBA experience in midseason (a la Gaines/Jeffers) it would cost them roughly $250k-$300k depending on when they sign him, resulting in a savings of about $900k or $1.8 counting the luxury tax.
Again, if Okur's healthy in the 2nd-half of the season and Fesenko proves to be a capable backup center, I'm not sure Utah would want to pay $1.2 million for their #3 center given their current payroll situation.
Elson I believe has a guaranteed contract so we would still have to pay him if we waive him. So he will not be waived unless he has a serious injury. But, absolutely I will be surprised if we dont try to shed some salary at some point before the trade deadline.