Nick Collison

Collison announced Thursday that he is retiring from professional basketball, Royce Young of ESPN.com reports.

Collison played just under seven minutes in his only appearance this preseason.

Collison signed a one-year deal Friday with the Thunder, Shams Charania of The Vertical reports.

Collison (coach's decision) didn't see the floor in a 126-121 loss to the Trail Blazers on Wednesday.