I have to assume he has had some issue, or is having some issue, to push this. The fact he states he has done deep research IMO, shows he was looking for some reason. Good for him to make the tough decision to step away from what he loves and the money.The replacement for Patrick Willis just announced he was retiring. Cris Borland one of the top rookies last year announced he is retiring due to safety concerns.
But yes, this is really hard on San Fran, and they have taken some heavy losses, and now have a QB controversy as they supposedly were shopping Kaep.