From an SI article...

"A new rule will ban the hiring of an “individual associated with a prospect”—this could be a high school coach, a parent or a seven-on-seven coach—to support positions for two years before and after the prospect signs. (This matches a rule already in place in basketball.) In other words, a school that signs five-star cornerback Bobby Lockdown may not hire his high school secondary coach as a director of high school relations and his seven-on-seven coach as a defensive analyst. Schools still may hire such a person as an on-field assistant or head coach, so Lockdown’s buddies can still get jobs where Lockdown signs as long as the head coach trusts them to coach linebackers or tight ends. Spoiler alert: He probably doesn’t."

So Keith Henry could be hired as Tech's 10th assistant coach. But not as a quality control coach, or something like that.