Special teamer Hannibal Navies is the lead candidate to take over at the left outside linebacker position for San Francisco.
Navies has started a total of three games since 2004, and is unlikely to be half the pass rusher Manny Lawson was. Parys Haralson and inside-outside linebacker Brandon Moore will also see increased playing time. The 49ers could explore the idea of bringing back edge rusher Roderick Green.