If he goes back to play in the NCAA, he will automatically be a draft pick for the Bengals in 2026, per the NFL's CBA. However, he would need to take legal action against the NCAA which does not permit players returning to NCAA play, once they have committed to be drafted. With only three accrued NCAA seasons, he would have good standing for this kind of anti-trust suit.
He is a star, but not one who is likely to make the kind of NIL money that would replace what he would lose in NFL guaranteed income.
If he goes to play in another professional league, the Bengals will hold his rights for three years.
If he doesn't play at all, he would be available to all teams in the 2026 draft. However, it is unlikely that he will hold that 17th pick status, and the guaranteed money that comes with it. With no current game tape, to capture scout's attention, other players would supplant him, and he could fall significantly.