There's two things Andrew Luck has to worry about:
1. A NFL rookie salary cap
2. Matt Barkley (but Barkley will most likely be back for his senior season. USC will be eligible for a bowl game)
Luck is the real deal, and even if he struggles in his junior season, he will still most likely be the number one pick. Money is the only thing I can think of that he can possibly lose. Other than that, I really don't see this as a huge risk.
1. A NFL rookie salary cap
2. Matt Barkley (but Barkley will most likely be back for his senior season. USC will be eligible for a bowl game)
Luck is the real deal, and even if he struggles in his junior season, he will still most likely be the number one pick. Money is the only thing I can think of that he can possibly lose. Other than that, I really don't see this as a huge risk.