I know he got some interest last year, but I feel like there's a reason he didn't end up anywhere. The fans do not love him. They didn't love his playcalling the last two years. They hated those playcalls in the redzone in the Super Bowl. I think there's questions about how good he really is.
He gets too cute, tries to do things his team isn't good at, and wastes downs and drives. Just looking at this Colts game, it was hard to see anything in the routes and plays that schemed to get receivers open. The Niners never run screens, so teams don't have to respect that. The only counter to all-out pass rush they ever had was Kap and Smith's mobility.
Today, every pass was Kaep trying to lazer it into a window. No plays just to get drives going. They have one good drive that was full of Pro Sets and power running, and leads to a TD. Surprise, suprise, doing the thing your entire personnel is built around and has succeeded with results in successful offense. After that? More slanging. Gore had 82 yards rushing, almost all of it in the first half. In the second half, they open up in shotgun and run verticals.
He got a lot of credit for involving the pistol offense and read option, but there's been no expanding upon it this year.