I love KK, and I know he would play if he could; however, if KK or Lewis is your starting point guard next year, UK will be in trouble.
Pope needs to recruit the best available point guard for his system next year. If KK is okay with playing behind a portal guard, Lewis, and JJ at the 1/2 spots next year, then bring him back. If not, let him know that you support him if he gets the medical redshirt and help him find another destination. This has to be a business decision on all ends. If he's cool with being UK's 4th guard in the backcourt rotation, bring him back.