According to this poorly written article, ND continues to negotiate with ACC in hopes that Clemson game counts as one of five vs ACC opponents. Article contradicts itself but sounds like things aren't settled yet.
www.si.com
Notre Dame–USC Football Series in Jeopardy, But Irish Looking to Extend Rivalry
The 2025 game is the last in the current contract between the blueblood programs, and the Trojans offered only a one-year extension.
