AP

Colin Kaepernick has suddenly become the most controversial player in the NFL because of his refusal to stand for the national anthem. But there may be another issue that could cost him his job in San Francisco: He’s not a very good quarterback.

Jay Glazer said on FOX that the 49ers are deeply concerned with Kaepernick’s decline as a player, which started last season when he struggled before getting benched, then got even worse this offseason when he lost significant muscle mass when he couldn’t work out following multiple surgeries.

“Regardless of politics or not, he has a very, very big uphill battle to make this team,” Glazer said. “I’d be shocked if he’s on the 49ers by the time this season ends. It has nothing to do with political views whatsoever. He lost a ton of weight this offseason, had three surgeries, couldn’t work out, lost that double threat, that size-speed ratio. No political views, he just hasn’t been effective. He’s regressing as a player. I’d be shocked if he’s on this roster by the end of this year. He may not be on it in the next two weeks.”

Kaepernick’s contract guarantees him an $11.9 million salary this season, and ordinarily a player with an $11.9 million guaranteed salary isn’t going to get cut. But if the 49ers really think Kaepernick has regressed to the point where they’d be better off with Blaine Gabbert starting and Christian Ponder and Jeff Driskel backing Gabbert up, then they can save a little money by cutting Kaepernick and hoping he signs with another team, as they would be able to reduce that $11.9 million by the amount of Kaepernick’s salary with a new team.

So there are football reasons that the 49ers might want to get rid of Kaepernick. At this point, they probably wish they had done so before this weekend’s non-football controversy.