On their most recent podcast, the II guys talked briefly about the Portal this off-season for ND.
Prister believes ND will exceed the number of transfer they brought in this year (8), and that he expects "significant" roster transformation - more-so than last year.
He touched on it briefly but from what he is hearing and what he expects, there are many seniors with a season of eligibility remaining that won't use it. Most just want to move on and try their luck in the NFL.
They spoke nothing of underclassmen, but you have to figure that there are some current juniors that likely won't be a part of the program next season.