"He said how well he played in Orlando and how he impressed all the coaches that saw him and that Coach [Roy] Williams was on board and wanted to move ahead. I gave Robert a heads up that Coach Williams might be calling and he did tonight."
With the offer, North Carolina joins the likes of Florida State, Georgetown, Indiana, Miami, Pittsburgh, Virginia, and Villanova, among others, to offer the 6-3 guard.
"I think it's another school that's going to be considered - obviously they are a blue blood," Marable said. "I think Robert is going to be smart with the decision process and his family is going to be smart. They have such good people around them."
Roy Williams and his staff were spotted at majority of Johnson's games at AAU Nationals during the final evaluation period this past week. With Johnson's strong play - leading his Boo Williams team to the Super Showcase semifinals - the offer wasn't necessarily a surprise.
"I think they knew the UNC offering was coming with the way he was playing and everything," Marable said. "Right now it's another school that has great basketball tradition, coaching staff and great players, but so do the other schools that have offered."
Last week, prior to the final evaluation period, UNC had talked to Johnson about scheduling an unofficial visit as soon as possible to Chapel Hill and Johnson had established tentative plan to do so.
With UNC, and many other schools, pushing for a visit, at this point no visit dates have been finalized.
"We are going to try and get together this week or next week hopefully we'll have a clear cut idea," Marable said. "There are a lot of coaches asking. Hopefully we'll have a conversation about the process and things like that."
North Carolina has three 2014 commitments - point guard Joel Berry and wings Justin Jackson and Theo Pinson - but the Tar Heel staff sees a need for a perimeter marksman to round out the class. After a thorough evaluation, UNC is convinced Johnson can fill that role.
"[McGrath] stressed to me that they have a great class and they need a shooter that can do other things," Marable said. "They have great wings and they have Joel [Berry], but they don't have that guy that can come in and knock down shots right now. I haven't seen their wings a bunch, but I heard they can go. They really like the way Robert shoots the ball and that he can do a lot of things, but they emphasized the shooting part."