Recess.
The Senate hasnt convened in a lame duck session so thats between sessions.
McTurtle owes the President do he wont raise a fuss.
Whitaker also will assume oversight of the ongoing investigation by special counsel Robert Mueller into Russian interference in the 2016 presidential election, and possible collusion by Trump’s campaign in that meddling, according to the Justice Department.
Whitaker, who has publicly criticized the Mueller investigation, by law can serve as acting AG for a maximum of 210 days.
He will have the power to fire Mueller “for cause” as outlined under rules governing the special counsel’s office, if such cause is found.
https://www.cnbc.com/2018/11/07/trump-says-attorney-general-jeff-sessions-resigns.html
I think a conflict of interest can be reasoning for a firing