I am fine with it because it is pre enrollment pro games. The NFL stuff is kids who've already played in the NCAA, gone to NFL camp, and then are trying to return to the NCAA.
Blame the NCAA for all of this, they sent the precedent when they started allowing European (semi) pro basketball players full eligibility a few years ago. So as long as you don't make more money than 1 year's equivalent tuition, you keep NCAA eligiblity.
My guess would be 2 of the 4. Would guess 1 ends up at Boston University, 1 ends up at Michigan. @yzerman19 has far more sources than me so he would actually know, it's just gut feeling/projection/historical recruiting trends telling me that
Ben Hrebik failed a class & didn't get through the NCAA Clearinghouse, so he's heading back to the O for his overage season of junior, roster spot opened up, Homer eligibility remaining, he got added