As for overall depth the receivers should be fine but you can be thankful the coaching staff exercized that last commitment in the 2009 recruiting class with Michael Harrison, the wide receiver from Dallas (Hillcrest), Texas.
The additions of redshirt freshmen Justin Blackmon, Adrian Richards, and Isaiah Anderson will be critical for the offense this spring. Blackmon is the guy that has the greatest potential for a breakthrough spring.
A major concern could be initially at the slot where both Davis and Bowling played. Look for the possibility of running back Travis Miller, who played wide receiver his senior season at Marlin, Texas, to be considered for duty there. Also, Justin Horton, while close to 240 pounds, still runs well enough to play wide receiver.
Here is a long at the depth chart as it stands going into the spring.
Hubert Anyiam, WR, 6-0, 190, So., Garland (North Garland), Texas
Adrian Richards, WR, 6-4, 190, R-Fr., Mesquite, Texas
Isaiah Anderson, WR, 6-0, 175, R-Fr., Wichita Falls, Texas
Bryce Hood, WR, 5-9, 185, So., Bartlesville, Okla.
Justin Blackmon, WR, 6-2, 190, R-Fr., Ardmore (Plainview), Okla.
Nathan Gilsleider, WR, 6-4, 195, Sr., Claremore, Okla./Eastern Oklahoma J.C., Okla.
Maybe more time is spent on the running game and developing a stronger red zone offensive attack. Just kidding, it will be important to get lots of work in for the development of the defense.