Carter (ankle) wasn't spotted at practice Thursday, Rich Cimini of ESPN.com reports.
Carter didn't practice Wednesday, so what he's able to do Friday will be key with regard to his chances of suiting up Sunday against the Vikings. If Carter ends up missing the contest, Zonovan Knight and Ty Johnson would be in line for expanded roles in Week 13, while James Robinson, who was a healthy inactive this past weekend, could also reenter the Jets' backfield mix.