Arch Manning exited the Texas Longhorns’ Week 9 game against the Mississippi State Bulldogs due to a head injury.

The injury occurred during the matchup, prompting concerns about his condition. Further updates are expected as the team assesses his status moving forward.
https://www.sportskeeda.com/college-football/arch-manning-injury-update-latest-news-texas-qb-entered-concussion-protocol-ahead-vanderbilt-clash