Predicting NFC North's best fantasy stars, sleepers, rookies and more

Eric Karabell predicts the big fantasy X factors for the Bears, Vikings, Packers and Lions. Getty Images

We’re going division by division in this blog space this summer leading up to the preseason and focusing on the fantasy stories to watch and which players could become more and less valuable before all-important drafts. We’ve covered the NFC East and continue with the NFC North.