Chicago Bears C Hroniss Grasu (knee) and DE Jarvis Jenkins (ankle, illness) did not practice Thursday, Dec. 31. S Adrian Amos (shoulder), CB Bryce Callahan (quadriceps), LB Shea McClellin (concussion), LB Pernell McPhee (knee), CB Tracy Porter (ankle), DT Mitch Unrein (knee) and LB Willie Young (rib) were limited.