I'll say what I've always said on this matter. It's unlikely that Mueller will indict a sitting President and nobody should be holding their breath waiting for it.
That said...it really comes down to Mueller's own frame of mind on this point, something he's hidden from us very, very well. If he's of the frame of mind that his job is solely to compile a report and deliver it to Rosenstein, who will subsequently deliver it to Congress, then no, he will not indict. If, however, his priority is justice, and knowing that a successful removal of the President through impeachment will never happen, then he will believe that it is incumbent on him to indict the President.
But Mueller doesn't keep an online journal, so we'll only know his frame of mind when he ultimately chooses to deliver a report or indict the President (which, I can't emphasize enough, nobody should be holding their breath for).
But here's an important point: There is no outcome in which we get to watch Trump being marched from the White House in handcuffs. That's not only unlikely; it will not happen. But the function of an indictment is that it would prevent Trump from running out the statute of limitations. In that light, indictment may be unlikely, but it's certainly not impossible.
