Oakland Raiders quarterback Terrelle Pryor is "questionable" for Sunday's game versus the Houston Texans after missing Friday's practice with a nagging knee injury.

"You never know," Raiders coach Dennis Allen said of Pryor's status for Sunday. "He may feel great tomorrow ... we're still preparing him."

Allen acknowledged that Pryor encountered a setback. Pryor felt worse Friday after sharing reps with rookie Matt McGloin in Thursday's practice.

Although Allen still is holding out hope, Raiders beat writers were unanimous Friday in their belief that McGloin likely will be under center in Houston.