"I have a fresh start. Now I am going to go out there with a chip on my shoulder," Johnson told the Tennessean's Jim Wyatt in a phone interview Wednesday. "I know a lot of people are doubting me. I want to prove everybody wrong who has doubts in me."
The 28-year-old running back has plenty of doubters. Since his 2,000-yard season in 2009, the player known as CJ2K has become a stagnant runner who is indecisive and doesn't create yardage after contact. His low point came in a career-low 3.9 yards per carry last season.
However, Johnson is the most durable runner in the NFL and has never had a season in which he finished with fewer than 1,000 yards rushing.
The Jets hope Johnson will provide them a lightning-and-thunder backfield with Ivory that will allow them to get back to a ground-and-pound offense.