I assume Brad wouldn't have signed on for a big extension to continue as Celts head coach if he felt that he was leaning toward returning to college.
Yeah, he had three years remaining when he re-upped, and anyone paying attention to Indiana could see that Miller was on an incredibly hot seat. He likely only kept his job last year because the season was cut short by Covid, so he couldn’t miss the tourney/bow out in the first round and inspire boosters to pony up for his buyout.