The Golden State Warriors say an exhibition game at KeyArena is on the verge of a sellout, just hours after tickets went on sale.

The Warriors will play the Sacramento Kings on October 5 in what is scheduled to be the last public event at KeyArena prior to a major overhaul at the site. It will be the first NBA action at the facility since the Sonics left Seattle in 2008. It will also mark the return of Kevin Durant, who played for the Sonics in their final season and who now plays for the Warriors.

More than 12,000 seats were sold in the first hour, and by the afternoon the entire building was close to a sellout, according to a Warriors spokesman.

The Seattle City Council has scheduled a September vote to finalize the demolition of KeyArena and construction of a new 750,000 square foot facility in its place. The Oak View Group, along with the NHL Seattle investment team, hopes to bring an NHL expansion team to the new building in 2020. The NBA has said repeatedly it has no current plans to expand.