More competition for the Panthers. Former Saints head coach Sean Payton is set to re-enter the NFL after a brief one-year hiatus. He’s already completed interviews with the Denver Broncos, Houston Texans, and Carolina Panthers and now, has one scheduled with the Arizona Cardinals. According to Howard Balzer of PHNX, Payton’s interview with Arizona is set for Thursday. Ian Rapoport of NFL Network confirmed the report shortly after. What will it take to acquire Payton from New Orleans? It’s tough to really tell. There’s a lot of speculation out there, some suggesting it could take as much as two first-round…