Rex Ryan: 'We didn't promise Chris Johnson primary role'

New York Jets head coach Rex Ryan has revealed that the club did not specify a role to running back Chris Johnson when he signed for the team last week.

Johnson was the feature back for the Tennessee Titans in every season of his six-year spell with the club, but Ryan has admitted that they haven't decided what they are going to do with the 28-year-old yet.

"Nothing was ever promised [like] 'you're going to get X amount of carries.' No role determined for really anyone," Ryan told reporters.

The running back ran for 1,077 yards along with six touchdowns in the 2013 season.