Hopefully an independent investigative special counsel will be assigned as soon as the IG report is out, but Mueller is likely a cornered snake ready to strike again soon, and it could be Trump's family next time, which could unleash a lot of new unexpected variables.
There's also a chance that Mueller folds his tent, as Trump is suggesting, but if he has skin in the uranium game etc he may be stuck playing to the last hand. The future of the country is on the table.
We may have reached the point where the only credible course of action is to dismantle the FBI entirely.