2014 for a reference is dicey, and a decade is a long time for dogs, relationships, vehicle ownership, etc. The book is out of date, and surprisingly the world moved on. The KIRO piece is from 2019 which makes that five years ago.
The sale was approved by the voters for a public-private sale to Paul Allen. I was one of those who voted against it. I'm a 30yr resident of Seattle. Jody Allen (His Sister) and his estate manage the Seahawks and the Portland Trailblazers and a minority stake in the Seattle Sounders (Soccer). She will sell the team most likely next year, or after to avoid a contractual obligation to give 10% to the city if she sells it before 2025. In accordance to a mandate in her late brother's will, where the proceeds of the sale will go to charity.
No one really knows the actual details of the will, but that's general knowledge widely reported as of 2024.