The 49ers placed fourth-year starter Alex Boone on injured reserve and signed Jarryd Hayne from their practice squad, Matt Maiocco of CSNBayArea.com reports (on Twitter).
Boone missed last week’s game with a knee injury but has started 59 games since starting his career at right guard at the outset of the 2012 season.
The 28-year-old former undrafted free agent will enter unrestricted free agency this offseason.
Boone will enter that courting period, however, on the heels of an ineffective season, according to Pro Football Focus, which rates the 49ers’ starting left guard 40th among guards this season. The Ohio State product was a second-team All-Pro selection in 2012.
Hayne returns to the active roster after spending the past two months on San Francisco’s practice squad. The 27-year-old ex-rugby standout’s played six games this season, mostly as a special-teamer,