I am not a fan of the 49ers so I don't keep up with them. I suspect they are just planning on rebuilding the team as all teams must do.
They've been one of the dominant teams for many years. It was bound to slip sooner or later. They made a mistake firing their coach a few years ago. I think the Lions will reap the benefits there because IMO he's an excellent coach.
And Owens was an absolute cancer to that team. I don't think they wanted him, cap or not.