AUSTIN, Texas -- Texas quarterback David Ash's junior season is officially over after the school announced Monday he will not play again this season while he continues to recover from symptoms of a concussion.

"David has been treated and evaluated by our medical staff daily for a recurrence of concussion symptoms and also visited with and received feedback from specialists," Texas head athletic trainer Kenny Boyd said in a statement. "Though he's made a lot of progress, we have not been able to clear him to return to competition.

"Due to the duration of symptoms, we are now at a point that we all believe the best approach for him is to not return this season."

Ash was hurt in a 40-21 loss to BYU on Sept. 7. He was cleared to play two weeks later against Kansas State but left the game at halftime with concussion-related symptoms. He hasn't played or practiced since.

Ash will seek a medical redshirt for the season after appearing in just short of three games, and Texas expects he will be ready to participate in spring practice. Ash finished with 760 passing yards, seven touchdowns, two interceptions and a 60.9 completion percentage.

"We've visited with David and his family and are all in agreement on his not returning to action as the best next step in his recovery," Boyd said.

Case McCoy has started seven games in Ash's absence and will make his eighth start Thursday night against Texas Tech.