Despite Colin Kaepernick's recent workouts, the chances of the QB getting signed are slim to none ... so says Warren Moon, who tells TMZ Sports he doubts NFL owners will give the ex-49ers star another shot.
"I just don't know if he's going to get that opportunity," the Hall of Famer said earlier this week. "I just don't think the NFL wants that subject back into the league."
Kaepernick hasn't played a down in the NFL since the 2016 season ... but he's been itching to get back ever since.