The Browns didn't exercise Janovich's option Monday, so he'll become a free agent when the new league year begins March 16, Ian Rapoport of NFL Network reports.
Janovich has been a starter his entire career and was a Pro Bowl alternate last season, so he'll likely garner plenty of interest from around the league. The 2016 sixth-round pick has scored five touchdowns (four rushing, one receiving) during his six-year career.