Fine. There are lots of other examples of guys who didn’t have P5 scholarship offers right out of high school, who went on to great college careers and/or the NFL.
But that's the one that you used and others have used repeatedly and it's a false analogy.
Look, if this guy chooses to come to Purdue(and it should be as a walk-on) and is a good student/athlete I would support him, just as I have stated MANY times. And just as i do for the other Purdue student/athletes across multiple sports.
Why not do what Horvath did, and others are currently doing, and walk on and attempt to earn a scholarship?