Whatever the minimum of necessary paperwork to absolve a player of improper benefits received is, it's not a problem. A title for a moderately priced SUV can be created in a relative's name, as can a receipt of sale for a reasonable price.
"Hey, how'd he get that ride? His uncle bought it. How did his uncle buy it? Paid cash. Paid cash, how'd he do that? ****, we don't know, but here's the receipt where he paid cash, and now y'all ain't got ****. Go tell the NCAA you think we're cheating because this kid's uncle bought him a used Tahoe in cash, you racist."