Trump and his attorney would be well served to encourage Mueller to finish up, drop the “collusion pretense”, and report on the intended goal - to find out what Russia did, if anything, to influence the 2016 election - including the Hillary-Wee-Wee-Dossier, Fusion-GPS routing money through the DNC and Coie to the Kremlin for Steele to gather bad talking points, etc.
There is a lot to discover but Meuller won’t find it.