By Daniel Chavkin The Chicago starter has been battling a shoulder injury all week. Justin Fields is questionable for Sunday as he’s battling a shoulder injury suffered last week, but a roster move may give an idea of whether he will play. NFL Network’s Mike Garafolo reports the Bears are adding quarterback Nathan Peterman to the active roster, an indication that Chicago may be leaning towards sitting Fields vs. the Jets. That would mean backup quarterback Trevor Siemian could get the start, with Peterman serving as the backup. Fields suffered a dislocated left shoulder against the Falcons las…