To Mike Martz, turning around the Lions' offense doesn't seem as daunting as it does to others. "We don't need a miracle, and I'm not a miracle worker," Martz said Thursday after the Lions introduced him as offensive coordinator and Donnie Henderson as defensive coordinator. Martz thinks the Lions have a lot of talent -- from quarterback Joey Harrington, to running back Kevin Jones, to the three top-10 picks at receiver, to the line -- and he can teach it. "It's exciting to see the potential here and hope and think that you can help that," Martz said. "That's the challenge, and that's why you're here, the challenge of it. I think I'm up to the task. We'll see." Martz said the new coaches had to make up their own minds about the players, so everyone would start with a clean slate -- including Harrington. "Whatever problems he's had in the past," Martz said, "all sins are forgiven." Many have wondered about Harrington's status, including Harrington himself, because of his past performance and his upcoming contract. Harrington is scheduled to receive a $4-million bonus if he is on the roster June 15 and a base salary of $4.45 million each of the next two years. But the Lions haven't asked Harrington to renegotiate -- at least not yet -- and Martz and coach Rod Marinelli not only sounded like Harrington would be back, they sounded happy about it. Asked if Harrington would be one of his quarterbacks, Marinelli said: "Yeah, he's going to be one of our quarterbacks. ... I think he's a great young talent."