Kaepernick is in Atlanta preparing for the 3 p.m. ET workout, which is being held at the Falcons' training complex just outside Atlanta.

Sources told ESPN's Jeremy Fowler that the NFL is providing three wide receivers for the workout. But the league has not given out the names of those receivers, so Kaepernick is bringing former NFL wideouts who volunteered to fly in on their own.? He may bring in up to five of his own receivers, sources told Fowler.

One receiver expected to attend the workout is Bruce Ellington, a source told Fowler. Ellington played with Kaepernick on the San Francisco 49ers in 2014 and 2015.

Kaepernick, his receivers and NFL officials conducting Saturday's workout will not be allowed into the facility until about 2 p.m. ET, when the Falcons are scheduled to depart for Carolina for their Sunday matchup with the Panthers, a source told Schefter. The Falcons are supplying an equipment person, a trainer and a videographer to help the NFL conduct Kaepernick's workout.