Chris Johnson unhappy Titans signed Shonn Greene

Tennessee Titans running back Chris Johnson's domain is being invaded -- and he's letting it be known he doesn't like it.

With the signing of former New York Jets running back Shonn Greene earlier this month, the Titans have added a back to complement Johnson in the backfield. But the three-year, $10 million contract the Titans gave Greene leaves Johnson feeling threatened and concerned.

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"I have never been a big fan of the two-back system, so I don't know how we plan on using him," said Johnson via The Tennessean, reiterating comments he made to last month. "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."

Titans coach Mike Munchaksaid Tuesday he plans to use Greene in all facets of the running attack, not just as a power and goal-line back, and that he might even get some entire series to himself.

It's hard to envision Greene taking over when the Titans have a running back with the ability to change the game in one play, as evidenced by Johnson's 94-yard touchdown run against Greene's Jets last season. But with that run contributing to his only 100-yard game in the Titans' final six games, maybe Munchak is giving Johnson a bit of a wake-up call.

Follow Kenny Legan on Twitter @KennyLegan.

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