Holtmann is pretty danged far from being in the hot seat. They finished 8th in KenPom this year, their best since 2013. He would have to have a disastrous season next year to be on the hot seat.
They should be pretty good next year. I also think they lose both Wessons. Unclear if they lose anyone else. They add Cal transfer Justice Sueing and Musa Jallow returns from his redshirt year. They should have a lot of guards and wings but not a lot of big men. Biggest question for me is development of Kyle Young and EJ Liddell. If they can add a solid three point shot OSU is a national title contender. If not not, may be hard get production offensively.