SANTA CLARA -- Nose tackle Glenn Dorsey, who sustained a torn biceps three weeks ago, is now expected to be available to help the 49ers late in the season.
Coach Jim Harbaugh on Friday said the 49ers expect a 3 ½-month timetable for Dorsey, who underwent surgery on Aug. 4. Such a timetable would make Dorsey available in late-November or early-December.
The 49ers this week signed Dorsey to a two-year contract extension. He is scheduled to earn $8.725 million over the next three seasons, including a $2.075 million signing bonus.
The 49ers are allowed to place Dorsey on injured reserve/designated for return on Sept. 2. He would not count against the team’s 53-man roster at the start of the regular season, and he would be ineligible to play for the first eight weeks.
Harbaugh said the 49ers were feeling optimistic about Dorsey’s ability to return after doctors performed the surgery.
“When they got in there, they felt like it could not have gone better,” Harbaugh said. “There was no frayed . . . it was a real good surgery. That was the talk going in, would he be back in 3 ½ months? Would it be four? Would it be longer?
“All indications I’ve gotten, it looks like a 3 ½ month.”
Unless Dorsey experiences a setback before Sept. 2, it appears as if the 49ers will not place him on season-ending injured reserve. Nose tackle Ian Williams, who opened last season as the starter before sustaining a season-ending leg injury, is back in the starting lineup in place of Dorsey. He is expected to be designated for return.
"There’s a very good chance of that, but there’s still things that could happen before that decision will be made," Harbaugh said. "But We’d like it to happen, yes. As an organization, we’d like to see that happen."