Hart is eligible to return after serving a one-game suspension for fighting, Sal Capaccio of WGR Sports Radio 550 Buffalo reports.
Hart was handed a one-game suspension for throwing a punch during Monday's 41-7 victory over the Titans, Mike Garafolo of NFL Network reports.
Hart signed a one-year contract with the Bills on Monday, Maddy Glab of the Bills' official site reports.
Hart (undisclosed) was restored to Buffalo's practice squad from the practice squad COVID-19 list Friday.
The Bills placed Hart (undisclosed) on the practice squad COVID-19 list Monday.
Hart signed a one-year contract with the Bills on Tuesday, Ryan Talbot of Syracuse.com reports.
Hart was released by the Bengals on Friday, Ian Rapoport of NFL Network reports.
Hart (knee) was a non-participant during the Bengals' practice session Thursday, Jay Morrison of The Athletic reports.
Hart (knee) has been ruled out for Sunday's game against the Steelers, Jay Morrison of The Athletic reports.
Hart won't be available for Sunday's game against the Titans due to a knee injury, Ben Baby of ESPN.com reports.