The 49ers just announced that they've signed tight end Sean Ryan, formerly of the Miami Dolphins.  Ryan (6-5, 260) was originally a fifth-round draft pick by the Dallas Cowboys out of Boston College in 2004. He spent his first two NFL season in 2004 and 2005 alternating between the Dallas practice squad and 53-man roster and then was traded by Dallas to the New York Jets in August of 2006. After two seasons with the Jets, Ryan signed with Miami in the 2008 offseason. He made the Dolphins 53-man roster after training camp and saw action in the season-opener before being cut. He signed with New Orleans for one game later in September before being waived. He has played in 37 career games with six starts and has caught 11 passes for 97 yards.

Kirtman was originally signed by the 49ers to replace Zak Keasey when he went on injured reserve.

I'm curious how this will affect the playing time of Delanie Walker.  Walker has been getting time at fullback so maybe they envision using him in a fullback/H-back type of role, something the Redskins do with Chris Cooley.  Also, Walker injured his elbow last week so it's possible the injury is a little more serious and requires some additional rest.  Maiocco stated that Ryan would likely see more time on special teams and possible in that h-back/blocking back role.