SANTA CLARA, Calif. – The San Francisco 49ers' coaching staff loves versatile offensive weapons. The team used Delanie Walker as their "Swiss Army knife" -- the tight end could do a little bit of everything -- but he departed to Tennessee in free agency this offseason. Fullback Bruce Miller has become somewhat of a do-everything player for the 49ers. But they want more like him.The team claimed rookie Chris Harper off waivers from Seattle with the idea of using him as a Walker-type tight end.