Update 11/14/2019 10:01am:

According to ESPN's Adam Schefter, the NFL will not release the names of team executives and coaches attending Colin Kaepernick's upcoming workout ahead of time. Earlier in the week, it was reported that the NFL would release the names of teams planning to attend, but an NFL source told ESPN that they never promised to hand over such a list. 

The workout will take place on Saturday (November 16), which will include on-field work and an interview with the quarterback. Nearly half of the NFL teams will be traveling for Sunday games, knocking them out of attending the workout. 

Source: ESPN

Update 11/13/2019 9:25pm:

According to new reports, the Atlanta Falcons and Detroit Lions have emerged as two of the franchises taking advantage of Saturday's workout/interview event. For starters, it should be no surprise the Falcons are having team reps attend the workout considering it is being held in Atlanta. The Detroit Lions head coach Matt Patricia is also sending reps to scout Kap's workout: 

"As an organization, we always do our due diligence on all players that are available ... so I know [Bob Quinn] and his staff will have someone down there to watch the workout and we’ll see where that goes."

TMZ reports that Kaepernick's camp requested a list of organizations and executives that would be in attendance but the league declined to provide such a list. Moreover, a number of teams have already reached out to his camp letting them know there won't be any reps in attendance from their respective teams. 

Original 11/12/2019 7:36pm:

According to ESPN's Adam Schefter, a number of NFL clubs have been informed that a private workout will be held in Atlanta for Colin Kaepernick. The memo from the league read: 

"Earlier this year, we discussed some possible steps with his representatives and they recently emphasized his level of preparation and that he is ready to work out for clubs and be interviewed by them. We have therefore arranged this opportunity for him to work out, and for all clubs to have the opportunity to evaluate his current readiness and level of interest in resuming his NFL career."

The session will include both an on-field workout and a subsequent interview. Schefter also reports that several teams have inquired about Kaepernick's readiness earlier this year. Just last month Kaepernick's reps said the 32-year-old has been "working out five days a week, for three years, in preparation to play again." 

Source: espn.com