Carter (concussion) returned to a full practice Thursday, Rich Cimini of ESPN.com reports.
That's a big step in the right direction for the running back, who was a non-participant Wednesday. Friday's injury report will reveal whether Carter heads into the weekend minus a Week 18 injury designation, which hinges on him fully clearing the NFL's concussion protocol. If he does, he'd be in line to head the Jets backfield Sunday against the Bills, with Tevin Coleman, Ty Johnson and Austin Walter also candidates to mix in.