Injuries limited Michael Crabtree to just five games last season. (Simon Bruty/SI) When the offseason began, the San Francisco 49ers seemingly had three priorities: the contracts of head coach Jim Harbaugh, quarterback Colin Kaepernick and wide receiver Michael Crabtree. Rumblings suggested the 49ers had prioritized extensions for both Harbaugh and Kaepernick in recent weeks, but noise surrounding [...]