Nick Mangold is asking for help. The iconic Jets center and New Jersey resident revealed on Tuesday that he’s in need of a kidney transplant, and is looking for a donor. “In 2006, I was diagnosed with a genetic defect that has led to chronic kidney disease,” he wrote in a statement posted to social media. “After a rough summer, I’m undergoing dialysis as we look for a kidney transplant. I always knew this day would come, but I thought I would have more time.” Mangold, 41, is in search of a