As the rest of Rapoport's tweet went on say, there are some things to work out first. Johnson is also the first pick of the San Diego Fleet of the Alliance of American Football, so he will at least temporarily need to get out of that to back up Sanchez.
PIT QB Landry Jones - Week 17 Fantasy Football Outlook
Week 17 vs. Cleveland Browns
Look for Landry Jones to get the majority of the snaps this week for the Steelers. But he'll be playing without LeVeon Bell and Antonio Brown. Even against a bad Cleveland pass defense, that isn't going to be enough to help you.