(Eugene, OR)  --  Oregon coach Mario Cristobal said he expects to learn today whether quarterback Justin Herbert and leading receiver Dillon Mitchell will be cleared to play Saturday against UCLA.  Both are in concussion protocol and have not practiced this week.  Hebert has completed 60 percent of his passes for more than 2,000 yards and 20 touchdowns.  Mitchell leads the Ducks with 48 receptions for 677 yards.  Braxton Burmeister and Tyler Shough are taking snaps with the Ducks first team and would play in Hebert's absence.