Coach Dan Campbell said Monday that Jefferson (ankle) could miss time due to his injury, Benjamin Raven of MLive.com reports.
Jefferson had to be carted off the field in the first half of Sunday's game against Pittsburgh after he sustained his injury. While Campbell indicated that the running back's injury isn't as serious as the team initially believed, he still could be forced to miss time. If Jefferson and Jamaal Williams (thigh) are sidelined Sunday against Cleveland, Godwin Igwebuike likely will operate as the No. 2 running back behind D'Andre Swift.