After landing three wide receivers via the transfer portal during the first open window of the offseason, South Carolina added two more potential playmakers during the post-spring opening in Dalevon Campbell and Vandrevius Jacobs. Now, those additions are one step closer to being official. “They signed their stuff this week,” head coach Shane Beamer said Tuesday night at the Spartanburg stop on the Welcome Home Tour. “Get them in here in a couple weeks and see how they can help us.” [GamecockCentral for $1: In-depth coverage and a great community] The 6-foot-4, 218-pound Campbell tallied 69 re…