Report: Ibaka agrees to extension with Thunder

Updated: August 18, 2012, 9:12 AM ET

ESPN.com news services

The Oklahoma City Thunder have locked up another of their core players by agreeing to a contract extension with center Serge Ibaka, according to a report.

Ibaka

Ibaka agreed to a four-year deal worth $48 million, league sources told Yahoo! Sports. Considered an above-average defensive player, Ibaka would've been eligible to become a restricted free agent next summer.

Ibaka would be the latest member of the Western Conference champion Thunder to reach a long-term extension, joining Kevin Durant and Russell Westbrook.

The 6-foot-10 Ibaka, who just completed his third season, averaged 9.5 points, 7.5 rebounds and 3.6 blocks this past season. He also was a member of Spain's silver medal-winning team at the London Olympics.