It seems Mueller met with Steele last summer, at about the same time the FBI counterintelligence specialist departed the Mueller special counsel, and another just recently departed a short while ago.
Additionally the Senate Intelligence committee met the owner of Fusion GPS which evidently went no where.
So what are we left with?
It seems a very partisan special counsel that has basically nothing. 
If so it would have been leaked by now.
There was only on Presidential candidate whose campaign manager has ties to the Russian Oligarchs and Putin- John Podesta