12:11 PM ET 03.21 | The Tennessee Titans have been one of the more active teams in free agency during the 2013 season and have done a good job, according to Chris Johnson, although he wasn't a big fan of the team's decision to sign former New York Jets running back Shonn Greene to a three-year, $10 million deal. Johnson told Jim Wyatt of The Tennessean on Wednesday that the size of Greene's contract doesn't really match the small role he should have in a backfield that Johnson has dominated for the past five seasons. "I have never been a big fan of the two-back system, so I don't know how we plan on using him," Johnson said casually. "I'm not afraid of competition, but I was thinking we'd maybe get a draft pick for the other back. And you don't give a guy that kind of money to be just a goal-line guy and in tough-yardage situations. So we'll see what happens."