He weighed 240 pounds in high school, as our Zack Carpenter documented here: https://www.elevenwarriors.com/ohio-state-football/2020/06/114629/the-story-of-why-and-how-miyan-williams-underwent-a-substantial-seven-month-physical-transformation
I'm sure he was 210 at some point and 247 just never updated his listing. But I have no reason to believe Ohio State's isn't accurate.
He is a walk-on this season. Unless something happens to Haubeil, the plan will be for him to redshirt this year, so he'll still have four years of eligibility going into 2021.
Day is speaking this afternoon.
Wish we could be there providing coverage for you all!