So a weird story here (link to the article).
Greg Bell was a JUCO transfer in his first year at Nebraska. He played heavily early on this season but started getting less playing time in games 3/4. Last week, before the Wisconsin game, he was told he wasn't going to be the starter anymore (though he would still rotate heavily) and Bell decided to transfer.
Bell almost immediately announced that he would be transferring to Oregon St. That would make him the 4th Nebraska player to transfer to Oregon St. in the past 2 months (QB Tristan Gebbia, LB Avery Roberts, WR Tyjon Lindsey). This makes some sense as former Nebraska coach Mike Riley is a consultant at Oregon St. and some other former Nebraska coaches are there. Frost is claiming tampering there saying he has "no doubt" that Roberts, Gebbia and Lindsey were in touch with "coaches who were formerly here." (Though it seems he has no hard proof.)
It has now been announced that Nebraska is preventing Bell from transferring to any other B1G school, any school on the schedule until 2021, and Oregon St. While the alleged tampering has to do with this, Frost also referenced the fact that Oregon St. is on a quarter system academically and not a semester system, saying:
"Right now, with the way the transfer rule is, quarters teams are at an advantage...We couldn't get a player in — if they wanted to transfer here — right when the season started. Some of these quarters teams are still taking them. I think that's an unintended consequence of the rule they made, but it doesn't create competitive balance."
So Frost is claiming the reason is Oregon St. has an unfair competitive balance over Nebraska due to their academic quarter's system. This claim does have some merit, as WR Tyjon Lindsey transferred last week and is already enrolled and thus sh be eligible to play next year at some point.
The weirdest part is that next Monday (Oct 15th) the NCAA's new transfer database comes into play, where players announce their intent to transfer into an NCAA database and then any school can contact those players without needing the original school's permission. Thus when Monday comes, Bell will still be able to transfer to Oregon St.