“I’ve been in shape and ready for this for 3 years, can’t wait to see the head coaches and GMs on Saturday,” Kaepernick wrote on Twitter Tuesday.
The Falcons plan to have scouts on hand, coach Dan Quinn said earlier this week.
The team leaves the facility Saturday afternoon to travel to Charlotte for a game against the Carolina Panthers Sunday.
Kaepernick, who guided the San Francisco 49ers to the Super Bowl after the 2012 season, has not played in the NFL since opting out of his contract on March 3, 2017.
Kaepernick started a league-wide movement to kneel during the national anthem to protest social and racial injustices and police brutality.
All 32 teams were invited to the private workout which will include an interview, measurements and other quarterback drills. The workout will be recorded and provided to all league teams.
The workout is closed to the public and the media.