Yes, yes, everyone is saying "he's flipping to Auburn!" and I don't disagree that it's a very probable outcome. Still, I hope that the kid is OK.
Anyways, the extent is unknown, but he didn't return after Q1.
Link: https://fightingirishwire.usatoday.com/2024/09/14/deuce-knight-injury-notre-dame-fighting-irish-football-recruiting/