A national brand like Red Bull wants AJ Dybantsa to sign an endorsement deal that requires him to represent the brand. Maybe his shoes has to have the logo of the beverage company. Maybe he is on billboards leading Northbound traffic along the I 15 into Utah County drinking the beverage or dunking a basketball into an ice bin full of redbull cans. Whatever it doesn't matter. The issue is they through his agent are contracting him to represent their brand. Has nothing to do with who he plays for, but who he is.
Nothing is under the table. Meanwhile he is a salaried employee of BYU and his job is playing basketball for the University sponsored team.
This is where this is headed. Any watchdog element the NCAA attempts to attach to this is toothless. The reason is because even a booster could create an LLC with the specific purpose of generating traction among his peers/business friends that he has the bragging rights of endorsing AJ which may mean AJ is obligated to show up to events, scramble golf outings or a weekend at a ski lodge to hang out with this rich dude and his buddies.
Regardless any lawyer even ones attending the U of U could hammer out an agreement where they not only brag about Pay for Play, but they house it in a manner that meets all the requirements of a legit endorsement agreement.