"Mr. Haskins? Mr. Bosa? Hi, I'm Roger Goodell, nice to meet you. Listen, I have a proposal for you. Look at the table in front of each of you. That right there, on each table, is what $100 million looks like. It's yours. All you have to do before you fill a pool with it and start swimming is to stay healthy between now and April. Completely healthy. No rolled ankles, no chipped teeth, no ingrown hairs or athlete's foot. 100% healthy. Now, you have a choice.
Option 1: train in a controlled environment that will hone your body so that it can perform for NFL teams, with proper nutrition and highly personalized and focused attention. As a bonus, you won't have to worry about classes anymore.
Option 2: As long as your grades are up, continue playing with the Buckeyes, for free, against competitive opponents who aren't at your level athletically and have been known to take cheap shots at knees, run the risk of breaking or tearing literally any part of your body, maybe sustain serious head and back injuries, all while performing in front of fans some of whom aren't above throwing snowballs stuffed with batteries at you. Oh, and remember, if any one of 32 team doctors turns up an injury, you can't have this money any more.
Any coach/team/fan/school that DOESN'T support that choice is selfish and needs to reprioritize.