The Steelers are on their bye this week and the players are off Thursday through Sunday. Bell could next report Monday, Oct. 22.
Bell told ESPN's Jeremy Fowler earlier this month that he intended to report to the Steelers during the Week 7-8 time frame.
"I miss football," Bell told Fowler then. "When I do get back, I plan to give it my all. I still do want to go out there and win a Super Bowl with the Steelers."
Despite that statement, as of Sunday, Bell had still not been in touch with team officials or players, sources told Schefter.
Bell hasn't signed his $14.5 million franchise tag while preserving his health for a long-term contract in Pittsburgh or elsewhere. During his absence, James Conner has emerged as a productive replacement at running back, rushing for 453 yards and seven touchdowns.
After Conner's 135-yard, two-touchdown performance in Sunday's win over the Cincinnati Bengals, Bell took to Twitter.
damn james 💪🏾— Le'Veon Bell (@LeVeonBell) October 14, 2018
After its Week 7 bye, Pittsburgh (3-2-1) will next take the field in Week 8 at home against the Cleveland Browns.