You guys who are saying DJ will *absolutely* not be a DT are guessing just like the guys who are saying he may grow into one. His frame isn't enormous, but if he's really 240, I don't see it as an impossibility. Perhaps unlikely, which is why I've said he'll start off at Chad Thomas' position and stay there unless he outgrows it, but who really knows?
I've seen UM guys with smaller frames gain a ton of natural weight in a surprising way. My only thing is NEVER bloat kids or keep them artificially slim. I think it's a problem when you do either. Let DJ eat, work out, fill out completely, and then just decide. It's not a big deal, as he can make an impact at either Thomas' spot or elsewhere. Recruit a second DT in this class ANYWAY.
There's guesses...
And there's educated guesses.
My guess is based on likelihood. It's unlikely, and uncommon, to see a 240lb kid blow up to 285 in college.
If you're guessing that a kid will grow to be a DT and all you're looking at is the fact that's "already 240" then you're guessing in the wrong direction. You can tell by a kid's frame/waist/torso whether he can hold that type of weight or not.
I've seen what the whole high school DE ----> college DT transition looks like.
We played against McIntosh when he was in high school. He was much thicker than DJ.
I also met Leonard Williams at the USF big man camp when he was a rising Senior. Again, much thicker than DJ.
When you're guessing based on past experience and/or likelihood then it's not "just a guess".