Roethlisberger has a timetable of 4-6 weeks, which is typical for a sprained MCL. The concern is that he's also dealing with a nasty bone bruise that might actually take longer to heal than the sprain. However, recovery from the bone bruise is largely about pain management, and Roethlisberger's on-field toughness is beyond reproach.
Wheaton should be fine for Monday night's game against the Chargers, though the impending return of Martavis Bryant caps Wheaton's Week 5 fantasy upside in the Steelers' Mike Vick-helmed passing offense.
Free agent cornerback Bradley Fletcher, who visited the Patriots on Tuesday, is signing with the team, reports ESPN.com. It's a one-year deal worth up to $2.5 million, according to the National Football Post.
Three injured players have been placed on the inactive list by the Patriots for their season opener Thursday night against Pittsburgh. They are running back Travaris Cadet (hamstring), defensive lineman Trey Flowers (knee) and safety Tavon Wilson (quad).