Emptying the notebook on a rainy Friday afternoon:If the 49ers were in the market for a veteran running back, I'd count Oakland free agent Darren McFadden as a real possibility. San Francisco running backs coach Tom Rathman was in Oakland when the Raiders drafted McFadden in 2008. While I'm sure the 49ers are studying McFadden, the need there just isn't strong. It would have to be the perfect, cheap situation for him to land with the 49ers, although, they could use him on screen passes.