If Mueller was investigating the dossier, it could be someone who Mueller asked about it. That person, especially if a Dem, might have lied to FBI.
All depends on how CNN is reacting to the story..someone said earlier they look all giddy like they cant wait to release the “Good news” while others said they look all constipated..how CNN reacts will tell the story..and whoever this person is, this person lied under oath..now Podesta LIED and said that they did NOT pay for the dossier on Trump(Til this year I had never heard of a freakin Dossier!) so maybe its Podesta