The lack of spring practice was disruptive
There would have been players whop likely would have figured out their future by how the depth chart worked it's way out during spring ball. A guy like McKinley might have either been impressive and moved up the depth chart or may not have and self selected out as either a grad transfer to another school or just end his college football career. The lack of spring ball may have also limited his options for a transfer since other teams may have been in the same boat and thus limited his options for other schools. I would speculate that the decision has already been made and that he isn't being given a 5th year but either a) McKinley hasn't announced it yet or b) Kelly is waiting on the final decision re: Kevin Austin. My guess is if Austin is on the team then McKinley isn't. Or Kelly is waiting in decisions by other players re: medicals, transfers or grades to see what his scholarship count is before he can commit to McKinley.
Right now ND is +5 which means 5 current scholarships have to go. It is too easy just to say no to a 5th year for a guy who hasn't set himself apart from the crowd at WR ( there are 12 guys at WR) than it is to force someone off the team unwillingly ro perhaps take a scholarship away from former walk ons. The fact that school is "closed" is also backing up the announcements.
I would guess that 2 WRs, at least one LB, probably 2 DL and possibly a RB are in the mix.