I hope he has a plan/good reason. But his choices are likely fewer over time & I hope he finds what he's looking for.
I hope he's looking for the school that can best position him for success in life and not choosing the school that matches his short term goals, like when he's likely to get playing time & which position he's going to play, etc.
Things change, life happens & seeing things out 10 years from now is the hardest thing for 18 yr old kids to grasp.