Veteran tight end Nick Boyle has been signed to the practice squad after being waived on Saturday.
A fifth-round pick from Delaware in 2015, Boyle was a critical piece of the offense for multiple seasons as one of the NFL's best blocking tight ends.
A major knee injury in 2020 impacted Boyle's career, and he appeared sparingly in 12 games this season, playing in a total of 108 snaps on special teams and 61 offensive snaps.
Harbaugh raised the possibility of Boyle rejoining the team at his weekly Monday press conference.
"Nick is a guy that's been here for a long time, and we've been through a lot," Harbaugh said. "Nick is playing good football; even this year, he's played a lot of football. So, it was a roster move that we had to make. We have some options with that, in terms of bringing him back, or possibly the practice squad, things like that. So, I would still say that Nick's still in our plans."
In another roster move, defensive tackle Christian Ringo was terminated from the practice squad.