Delanie walking away?

Though he's typically been outshined by fellow San Francisco 49ers TE Vernon Davis, impending free agent Delanie Walker certainly did himself some favors with his play down the stretch of the 2012 season, and in the club's run to the Super Bowl. Despite playing WR in college, Walker has become a force in the blocking game -- both in-line and downfield -- as evidenced by his key play on Ed Reed during a Frank Gore TD run in the Super Bowl. So will he be back under Jim Harbaugh's tutelage in 2013?