I think Team Trump has serious dirt on Mueller. Dirt is the currency of the DC realm.
Offer Mueller the chance to step down / end the inquiry or else Sessions will appoint an oversight counsel to make sure everything is on the up and up and investigate the Special Counsel and his staff. If there really is dirt then he’ll just agree there’s no need for the investigation to continue.
Now Mueller is the one between a rock and a hard place. If he gives Trump a clean bill, the press will pillory Mueller - aftetr setting up the notion that Mueller is out to get Trump.
I think Sessions should withdraw his recusal. The Russia thing is a hoax, and he should never have done it in the first place. Then Sessions fires Mueller. Trump has spent the first six months of his term fighting leakers and political bitches on both sides. It’s time to end it.