It doesn't work that way I'm afraid. If you have that kind of size, combined with some athletic ability, you can get a scholarship offer based off of potential alone... which I believe is the case here.
But once you get to Big 12 football, you better bring more to the table than size and some athleticism. You better KNOW how to play the position. There is a lot of technique to learn. A lot to learn about "staying home" and not always getting sucked in on the speed rush, etc.
Irving will most likely need a year to learn the ropes. Hope I'm wrong, but all indications seem to point in that direction.
Sorry to burst your bubble.