Mueller has to make a move to legitimize his investigation. I suspect with the rising calls for him to step aside because of his involvement, he will go after Manafort (even though he was working for the dems). Don’t know who else, but maybe someone to make it look impartial.
Right away people on CNN are saying Trump needs to stop saying the investigation is costly, etc. This is all to change the news and justify Mueller. They ran into court to get indictments now. This was done by Mueller’s much criticized aggressive deputy.