What risk? You can’t risk something you don’t have. He can’t go through the combine or pro days. He’s damaged goods. He probably won’t even be 100% by fall. He may not even be able to pass physical to be on an NFL team even if one took a flyer on him. He’s not risking anything by coming back because he has nothing to lose. If he goes pro now, he’s probably done with football.
Worst case…he comes back and gets hurt, doesn’t get drafted…which is exactly where he almost certainly ends up if he leaves now. But he might come back, play well, get healthy, and actually get drafted and stick with a team.
So no, the risk isn’t too great. Because he’s not risking anything for a chance to get drafted in 2025.