Semantics at play. The radio hosts have documents "related" to the investigation. So it could be a draft, notes, emails, but not necessarily a final submitted report. The NFL says that they have "received no such report", which isn't a denial of the report's existence, but that it hasn't been submitted to them.
However it comes to be, the recommendations aren't surprising. Although, with Richardson, he voluntarily put the team up for sale, so curious how bold the league would get in this situation.