U might be right because u remember there was six zetsus,4 was used for the kages and 1 for orochimaru and last one was absorbed by juugo. And if we go back when sasuke got hurt and juugo revived him with his DNA and restored his organs, I believe the same thing would happen again probably now that naruto and sasuke are goingn to get a face lift.Well, I think maybe Orochimaru is the answer to Sasuke getting the Rinnegan. If Sasuke gets Zetsu-DNA from Orochimaru, he will probably awaken the Rinnegan, because then he will have both Uchiha and Senju cells.