My sources say this (both in the OU circle and in the power five circles):
David Cason is still probably the leader right now. Has a history of being an excellent recruiter--great in Texas. Has not been known for player development or scouting. The OU staff does not currently have a fantastic player development guy on staff--could be an issue.
Pooh Williamson is right there as well. Both Pooh and Cason have issues with just being retreads. Both have been let go or migrated for specific reasons a number of times. Neither one has had great success in the larger limelight. Williamson is a better relationship guy than X and O's from reputation.
Kermit Holmes--not a chance in hell. Fired from Lamar...now working as an assistant high school coach. Not enough meat on this bone to even warrant conversation.
Hollis Price--an intriguing name, but currently makes 90k a year doing very little with Houston. Has an easy job--knows it--and isn't pushing to move up at the moment. Has little experience recruiting or player development.
Wade Mason--maybe the most intriguing name so far. Worked as a GA with OU. Young, dynamic coach with great ties in Texas. Known to be a great recruiter and a fantastic skill development guy. Tireless worker. Almost hired by Chris Beard last year at Texas Tech (needed other recruiting ties so went another direction). Also a little note--very connected with Crutchfield and was key in bringing in Buddy through his connections and family ties.
Edit***By the way...everyone says they have close ties with Rod Thompson.