This is rough.
It's an unfortunate byproduct of the college football calendar, the transfer portal calendar and the college semester calendar.
They can't push the winter portal out further, or you'll have guys missing the start of semesters. You can't wait to enter the portal if your current college is in the playoffs because you can get frozen out of opportunities.
It sucks for Penn State, not just for this year, but for next ... I would have liked to have seen what Beau could do at the helm full-time next year, if Allar makes the leap to the pros. I think he showed enough in his extended relief duty earlier this year to let us know he might be able to bring a dynamic dual threat option to this offense, which could open up a lot of possibilities for others, and especially would be helpful in those situations where the "traditional" aspects of the offense weren't clicking at that point of the game.
If Allar is coming back, it's obviously a more palatable situation for PSU. A lot depends on who else leaves, and who stays, but the offense could be great next year.
I selfishly want Beau to stay, but I can't in good conscience hold it against him for leaving. If he believes Allar's returning and Grunk is the heir apparent, he has to bet on himself and seek an opportunity elsewhere - he's capable. He already graduated.