The San Francisco 49ers' interest in free-agent receivers Julian Edelman, who is visiting the team today fresh off a 105-catch season in New England, and Hakeem Nicks, says this: the team is clearly interested in using more three-receiver sets.
The NFL is a league of three-receiver sets, although the 49ers did not subscribe to that theory. According to ESPN Stats & Information, the 49ers were last in the NFL using three-receiver sets in 2013. They ran three-receiver sets on just 205 snaps. Green Bay ran the most in the NFL with 817 three-receiver sets.
The interest in Edelman and Nicks, both impact players, shows the 49ers want to get closer to Green Bay in that regard.