Not seeking re-election are TUSD Governing Board members Rachael Sedgwick, Kristen Ann Foster and Bruce Burke. Adelita Grijalva is remaining on the Board, so your article is incorrect. Also typo in title, should read "seats" not seat.
There's sports talk out there that Pat Darcy may enter the Mayor's race. He tried to run for Mayor in 2010 as an Independent, but didn't get enough signatures. He was a pitcher for the Cincinnati Reds, and ran before unsuccessfully for Mayor in the Dem primary in 1999.