You misheard. Nothing but praise for his defense and leadership comes out of the Thunder players and coaches.
Well, there have been grumblings (or maybe only speculation) that they would love to get out from under his contract if they can, particularly with Ibaka's new contract kicking in next year, and a need to resign (or replace) Kevin Martin.
But, they would only give him away if they were getting real cap relief, and likely would still want some value for him.