via Josh Katzowitz, CBS Sports 
From the Broncos:
John Fox has been cleared by doctors to return as head coach of the Denver Broncos beginning Monday. We are very pleased that his recovery from a heart procedure on Nov. 4 has progressed so well.
Our organization is confident that his health will allow him to meet his head coaching responsibilities. While no formal restrictions will be placed on his workload upon return, he will continue to be monitored by our medical staff as his well-being remains our No. 1 priority.
“We look forward to Coach Fox’s return to the team on Monday.”