I'm putting up hard coin to back up my prediction - Mueller won't find anything directly on Trump colluding with the Russians with respect to the election.
Oh, he'll find dirt. No one as rich as Trump is clean and his nature is to push the envelope, so Mueller will find financial dirt but nothing directly connecting Trump's campaign to Russia.
Why?
Because here in my part of the world, Trump has been almost daily fodder for decades. He delegates stuff out. He never gets involved himself in the down and dirty so other people might go to jail but not him. His management style pretty much ensures that he stays one level removed from anything. It is the NY way. NY is mobbed up big time and that's how the bosses stay clean, by keeping everything one level removed from them.
But I'll go even further. I don't think that, even apart from Trump, there is anything actually connecting the Trump campaign to Russia.
Why?
Because this group has been stepping on their junk from day one. They were totally inexperienced, completely unprepared for campaigning and then governing. This is the gang that can't shoot straight. They couldn't get a good conspiracy going if they tried and if they did, based on the leaks I've seen, they wouldn't have been able to keep their mouths shut about it if it had happened.
So with respect to collusion with Russia with respect to the campaign, I bet Mueller comes up a dry hole. Folks will then have to deal with the fact that he's the President, fair and square, and get on with their lives.
On obstruction:
Dry hole. Sessions will be found to have kept Trump from making Presidency-ending mistakes. Lots of thunder will roll but no heads. Trump will have been saved from himself by people he will never thank or even understand what they did for him, which makes him an ingrate in addition to his other personality flaws but not a criminal.
On finances:
No bet. Too opaque for me to even hazard a guess about that or how it relates to Trump's policies towards Russia.
I'm on the record. Who else wants to be?