Eagles defensive coordinator Jim Johnson is taking a leave of absence to begin a second round of chemotherapy to deal with cancer. Johnson won't coach at the upcoming a three-day rookie camp beginning Wednesday. "I told him to take care of himself first, and when he's ready to come back, come back," Eagles coach Andy Reid said Monday. "I'd like to tell you he's great, but he's not. He's struggling right now," said Reid. "I told him, when you feel like it, come back."