Johnson, a 6-foot-4, 285-pounder, is making an official visit to Rutgers.
"I talked to those coaches a lot," Johnson said. "They send me messages on Facebook. The only (visit) I have guaranteed is going to Rutgers this weekend.
"I want to go look at Louisville and probably South Carolina. Those probably won't be until January. I've been to North Carolina. They're all about the same right now. I wouldn't say I have a favorite."
Johnson doesn't think there will be a fifth official visit, mostly because of timing.
He visited North Carolina last month and will check out the Scarlet Knights this weekend. After that, schools head for winter break, and official visits are not allowed unless classes are in session.
Trips to Louisville and South Carolina are not yet set, but schools are coming through Edward H. White on a daily basis.
"This past week Southern Miss was there, UNC on Tuesday, Ohio State on Wednesday, and Louisville," Johnson said. "A coach from Rutgers said he will be here Monday, and the coach from South Carolina is still trying to schedule a visit."
Johnson is the former teammate of Rutgers freshman running back Casey Turner, and the two speak regularly.
In fact, despite Turner contemplating a transfer, he is selling Rutgers to Johnson.
"He's doing all right," Johnson said. "All he was really saying is I'm as big as the guys up there and I could play. He's saying I would go ahead and dominate."
The Rutgers staff is also talking to Johnson about playing right away.
"They say I would be able to contribute," Johnson said. "Maybe after I learn the game scheme and the plays, then I could get on the field. I heard people say it's just the mental part of it and game speed that is the toughest."
Johnson said he plans on making his decision on signing day.