It was stated that they would pay 100 when they left. Not exactly new news. That was enough for B12 to make FOX whole and basically pay back the $$ the legacy 8 were giving the new 4 schools to play first 2 years. Really both sides wanted them gone, But B12 didn't need them gone. It was fair for everyone involved.
If memory is correct, they would have paid out 79 mil if they had stayed one more year.