Collison signed a two-year extension worth close to $8 million with the Thunder on Tuesday, Marc Spears of Yahoo! Sports reports. A glance at Collison's numbers show that he's been a relatively minor contributor this season, but he's considered one of the better locker room guys in the league and has been with the organization since being drafted by Seattle in 2004. The deal will keep the 34-year-old in Oklahoma City for two more seasons, after which it's reasonable to think he may consider retirement. Collison is averaging 3.8 points and 3.4 rebounds in 16.0 minutes per game this season.