The San Francisco 49ers' options for a free-agent receiver shrunk Saturday when, as expected, Julian Edelman returned to the New England Patriots.The Bay Area native visited with the 49ers on Friday. However, the pursuit was considered somewhat tepid. Edelman wasn't a natural fit for the 49ers, anyway. He is a slot receiver and that's a role Anquan Boldin occupies nicely.The 49ers need a speed receiver and that's why they are talking to Pittsburgh's Emmanuel Sanders.