Guess we weren't too far off in what we were thinking about Ibaka this morning huh? Sam Presti and the Thunder made it official earlier today. Check out the link for the official press release. The Oklahoma City Thunder have signed guard James Harden, center Byron Mullens and forward Serge Ibaka to contracts, it was announced today by Executive Vice President and General Manager Sam Presti. Per team policy, terms of the deals were not disclosed.