Kaepernick is nearly healed from a post-draft surgical procedure on his lower left leg, which the 49ers believe won't have an impact on the second-round draft pick's rookie season.
The former University of Nevada quarterback now is dropping back from center, marking a critical step in his rehabilitation, according to The Bee.
It's not Kaepernick's first session with his new teammates. He threw to 49ers receivers at player-only workouts in May.
Niners rookie running back Kendall Hunter will attend the symposium, his agent told The Bee. The event, operated by the NFLPA, actually is a replacement event for the league's version, which was cancelled because of the lingering lockout but in past years has been credited with educating rookies about life in professional football.