Fisher has not played in a game for the Ducks since Sept. 13, when Oregon beat Wyoming 48-14. The team has allowed 12 sacks in the two games since, per CSNNW.
Redshirt freshman Tyrell Crosby will move to right tackle when Fisher returns.
Fisher's return is a significant development for Oregon's offensive line, which has been beleaguered by injuries.
Oregon lost last Thursday to Arizona 31-24 in a game that saw the Ducks' running lanes shut down and quarterback Marcus Mariota often pressured in the pocket.
The 12th ranked Ducks take on the 18th ranked UCLA Bruins in Pasadena, Calif., this afternoon.
- Will Green