That player is Brandon Wright. Think of the change of circumstances in the fortunes of both Duke and UNC had Wright chosen Duke over UNC. I know it is a useless supposition, but interesting to think how one player who I think was choosing between the 2 schools could have made a huge difference to both programs.
Now if Wright decides to come back for another year, then pencil in UNC for a top 5 team next year and a potential National Championship team.