Darren Heitner points out that this paragraph from the Louisiana TRO is about to become very relevant to the SEC's policy, as it enjoins not just the NCAA, but those acting "in concert" with it, from prohibiting these players on the basis of their pro experience.
This is a section in the Louisiana injunction order. All persons acting in concert or participation with the NCAA are enjoined from prohibiting the plaintiffs from competing in NCAA Division I athletics. The plaintiffs don’t need to use the transfer portal to sign with a school and the SEC should tread carefully before taking any action against a player who previously played at an SEC school.