ESPN's Adam Schefter reported Thursday that the Seahawks' decision came after Kaepernick declined to stop kneeling during the national anthem next season.
However, NFL Network's Ian Rapoport reported the Seahawks didn't postpone the meeting solely because Kaepernick declined to stop kneeling. Instead, they "asked for his plan moving forward on how to handle everything and there was not a firm plan."
Per Bob Condotta of the Seattle Times, the Seahawks will hold internal talks about potential backup options at quarterback, but they could still consider signing Kaepernick in the future.
After sitting out the entire 2017 season, Kaepernick held a throwing workout on a practice field in Houston last month.
Kaepernick began protesting during the national anthem during the 2016 preseason with the San Francisco 49ers. His decision to protest stemmed from not wanting to "stand up to show pride in a flag for a country that oppresses black people and people of color," he told NFL.com's Steve Wyche.
The Seahawks were one of the teams Kaepernick met with as a free agent last offseason, but NFL Network's Mike Garafolo reported contract talks broke down because the two sides couldn't agree on financial terms.
In 69 regular-season games with the 49ers from 2011 through 2016, Kaepernick threw for 12,271 yards and 72 touchdowns with 30 interceptions.