Of course Ely would consent to losing his bird rights. It would be very good for Ely to go to NJ.
1) Going to NJ with a depleted front line would mean more minutes, and with Jason Kidd, Carter, etc. to get him open looks. So he would get better contract offers.
2) If he still had his bird rights, teams would be less agressive to get him knowing the Bobcats could match every offer.
The only reason why he wouldn't want his bird rights waived would be I guess for sign and trade purposes, but the Bobcats are under the cap and could do a sign and trade even if he went to New Jersey and played for the remainder of the season. As well I don't know if he is going to be making more than 5-6 mill a year.