Corey Nelson's appeal for a fifth year of eligibility was denied by the NCAA, a source confirmed, but OU has requested another review. The news was first reported by ESPN.com.
Nelson told The Oklahoman in a text message Thursday afternoon that he still hadn't heard anything regarding his appeal.
The senior linebacker from Dallas was having the best season of his career before tearing a pectoral muscle against TCU on Oct. 5.
The team captain applied first to the Big 12 Conference for a medical redshirt and was denied. He appealed to the NCAA from there.
According to the ESPN report, the review is Nelson's final recourse.
NCAA rules stipulate a player can't have played in more than 30 percent of a season and still qualify for a medical redshirt.
THOMPSON, SHEAD NOT EXPECTED BACK
The Sooners will likely be without a pair of offensive linemen for the Jan. 2 Sugar Bowl against Alabama.
Tyrus Thompson and Adam Shead are not expected back for the game, OU coach Bob Stoops said this week.
Shead, who started 10 games at left guard, missed the season's last two games with a back problem.
Thompson suffered a leg injury during the win over Kansas State and missed the Bedlam game.
Both are redshirt juniors.
Once again, Derek Farniok is expected to start at left tackle while Nila Kasitati will start at right guard with Bronson Irwin moving over to the left side.
On the defensive side, Stoops said that freshman linebacker Jordan Evans was back in practice. Evans missed the last three games after suffering an injury against Baylor.
Stoops said the status of Torrea Peterson had not been determined. Peterson missed the last two games after making his first career start against Iowa State.
BY RYAN ABER AND JASON KERSEY