Since Steelers RB Le'Veon Bell hasn't even begun to practice yet, even individual drills, I assume he's out Week 2. My guess is he's back after the bye.
Fantasy Impact:
The Steelers bye is Week 5 so this all makes a lot of sense. Who knows how much Bell will even help behind a depleted offensive line. But he should garner a big workload if healthy and that could be something fantasy owners can hang their hats on at least. Unfortunately, it's a bit of a long time to suck up a roster spot on your team...