San Francisco 49ers quarterback Colin Kaepernick smiles as he answers question during an NFL football press conference on Wednesday, June 4, 2014, in Santa Clara, Calif. Kaepernick received a new six-year contract extension Wednesday that keeps him with the franchise through the 2020 season. (AP Photo/Marcio Jose Sanchez)
San Francisco 49ers quarterback Colin Kaepernick answers question during an NFL football press conference on Wednesday, June 4, 2014, in Santa Clara, Calif. (AP Photo/Marcio Jose Sanchez, file) ** FILE **
San Francisco 49ers quarterback Colin Kaepernick prepares to throw as coach Jim Harbaugh watches during an NFL football organized team activity, Wednesday, May 28, 2014, in Santa Clara, Calif. (AP Photo/Marcio Jose Sanchez)
San Francisco 49ers quarterback Colin Kaepernick, center, jokes with teammate Michael Crabtree (15) during an NFL football organized team activity, Wednesday, May 28, 2014, in Santa Clara, Calif. (AP Photo/Marcio Jose Sanchez)
San Francisco 49ers' Anquan Boldin celebrates his touchdown catch with quarterback Colin Kaepernick (7) during the second half of the NFL football NFC Championship game against the Seattle Seahawks Sunday, Jan. 19, 2014, in Seattle. (AP Photo/Marcio Jose Sanchez)
San Francisco 49ers' Colin Kaepernick fumbles as he is hit by Seattle Seahawks' Cliff Avril (56) during the second half of the NFL football NFC Championship game Sunday, Jan. 19, 2014, in Seattle. (AP Photo/Matt Slocum)
San Francisco 49ers' Colin Kaepernick fumbles as he is hit by Seattle Seahawks' Cliff Avril during the second half of the NFL football NFC Championship game Sunday, Jan. 19, 2014, in Seattle. (AP Photo/Elaine Thompson)
San Francisco 49ers quarterback Colin Kaepernick throws during the first half of the NFL football NFC Championship game against the Seattle Seahawks, Sunday, Jan. 19, 2014, in Seattle. (AP Photo/Ted S. Warren)
San Francisco 49ers' Colin Kaepernick throws to Vance McDonald during the first half of the NFL football NFC Championship game against the Seattle Seahawks Sunday, Jan. 19, 2014, in Seattle. (AP Photo/Elaine Thompson)