 The Thunder also signed free agents Hasheem Thabeet and Daniel Orton, and signed guards Andy Rautins and DeAndre Liggins.They re-signed forward Serge Ibaka to a four-year, $48 million extension.After failing to sign James Harden to an extension that was reportedly worth four years and $52 million, the team decided to trade Harden rather than having to pay the luxury tax penalty.