I didn't realize this rule existed. The Medina DP signing makes much more sense with these terms.
"Because Adi is a DP, Portland would receive 100 percent of any transfer fee until they recoup all out-of-pocket payments they’ve made to him since he joined the club. After those payments are recouped, Portland would receive 75 percent of whatever is left of the fee and the league would collect the remaining 25 percent. The Timbers would only be able to turn the latter part of their cut of the fee – the 75 percent after all out-of-pocket payments are collected – into
General Allocation Money. "