So the argument to not grant him the waiver is the following:
He opted out Aug 4, before the B1G cancelled initially. This was also technically before the announcement for the Conference only season starting in September (but I would think that the Coaches and Players knew of this announcement at least one day before if not more). Due to that, and the fact that he signed with an agent so quickly, would seem to imply he had been thinking about opting out for a long time and had the B1G stuck with that schedule Bateman would not be playing and could not opt-back in. It follows that even though now there is the opportunity for him to come back he shouldn't be allowed since he opted out before the full cancellation.
The argument for granting him the waiver is as follows (which I agree with):
He opted out for health reasons. At the time, even though the B1G was playing he did not feel safe with the existing health safety protocols given that he has asthma. Now that time has progressed, the B1G admitted that they didn't think their protocols were safe enough to play either since they cancelled. Now that there have been advancements in testing, the protocols have been updated and now both the B1G and Bateman feel it is safe to play. Since he made his decision based on his health and safety, and now there are new protocols that are better, he should be allowed to play.