I think you definitely would have to take back Rip Hamilton and the $5m he is owed next season (plus the partially guaranteed year after that). Then you need to take Korver or Brewer to match salaries. And you probably also have to throw in a draft pick.
The Bobcats pick is listed as lottery-protected in 2012, top-12 protected in 2013, top-10 in 2014, top-8 in 2015, unprotected in 2016.