Spangler will be a junior this season while D.J. Bennett, who was a solid defensive presence by the end of the season, will be a senior.
The Sooners also recently added Houston transfer TaShawn Thomas, who was a starter for the Cougars last season.
Thomas is appealing to be eligible immediately and will have one season of eligiblity.
Manyang could be teammates this season with former Douglass and Oklahoma State point guard Stevie Clark. Clark, who was dismissed from the team at OSU following a February arrest, is enrolled at Indian Hills this summer and is likely to play there this season.
Manyang’s commitment was first reported by SoonerScoop.com.See this story on twitter.com