With special-teams ace Kassim Osgood re-signing on Monday with the San Francisco 49ers, their list of unrestricted free agents is dwindling. Let's take a look:Perrish Cox: The 49ers brought back Eric Wright and signed Chris Cook from Minnesota. I wouldn't close the door on Cox, who played well in the playoffs, coming back at some point, but he's clearly not a priority.Jonathan Goodwin: I could also see Goodwin coming back at some point, perhaps after the 49ers take a look at their young centers.