Ty Ellis was previously an assistant coach with the Suns.
The preseason game will be the NBA's first return to Seattle since the Sonics left for Oklahoma City in 2008.
Jamel Artis will compete in training camp for a roster spot.
Wenyen Gabriel played for the Sacramento Kings in Summer League.
Vince Carter spent last season with the Kings.
Yogi Ferrell backed out of a two-year, $5.3 million deal with the Mavericks earlier on Friday.
Nemanja Bjelica will have $2 million guaranteed for the 19-20 season.
Vlade Divac reached out to Nemanja Bjelica to explain the value of remaining in the NBA versus returning to play in Europe.
The deal clears an additional $1 million in salary-cap space for the Kings, who now have $20.5 million.
Talks have not progressed between Rodney Hood and the Kings to the point where an offer is imminent.