One of the San Francisco 49ers' top need positions is wide receiver. There's a strong chance the team could use their first draft pick on the position.Let's take a look at their 2013 receivers and where they stand moving forward:Michael Crabtree: The future is bright. Crabtree should be completely healed from his May 2013 torn Achilles by training camp. He is a focal point of the offense. He is a strong candidate to be re-signed in the next year.