Hilliard was injured during practice Tuesday when he went down after a running play. The person spoke to The Associated Press on condition of anonymity because the team had not announced the severity of Hilliard's injury.
Hilliard joined the Jets last season after being waived by New England. The former sixth-round pick of the Miami Dolphins has played in 62 NFL games, rushing for 163 yards and two touchdowns on 39 carries.
The person spoke to the AP on condition of anonymity because the team had not yet announced the move. The signing was first reported by ProFootballTalk.com. Hilliard was signed in the middle of last season to replace John Conner. He finished with eight carries for 31 yards, and four catches for 23 yards and also contributed on special teams.