Im pretty sure that no one can acquire and extend Lauri unless its a scaled extension which is capped at 113/4 for him.~the Bridges package. We can take a little less and/or take back bad salary.
Maybe the way to get something bigger back from whoever is to include Kessler as some kind of security/sweetener on value for win now teams (considering that at present Lauri is an expiring contract). An excellent rim protector on a rookie scale salary is highly useful for a team looking to keep the payroll under control.
Someone tell us if a team that acquired him this summer could extend him at an appropriate number (extensions are not an area I know well, especially this CBA). If he can’t really be extended, trading him this off-season for a haul is out of the question.
R&E also requires you to use free cap space for the first year, which is why its rather rare to see.