Welker, who is set to become a free agent in March, is mulling walking away from the game due to "several years of head injuries and declining production," according to the report.
The 12-year veteran sustained a concussion in a 2014 preseason game versus the Texans after getting hit in the helmet by Houston safety D.J. Swearinger. The receiver sustained two concussions in late 2013 as well, one in Week 11 and the other in Week 14.
When asked last month whether he wants to return to Denver next season, Welker said "I don't know" and added that there's "a lot of things I need to figure out."
The 33-year-old played in 14 games in 2014, starting eight and missing two due to a suspension. He had a career-low 49 catches for 464 yards and two touchdowns.
Welker was named to five straight Pro Bowls from 2008 to 2012 while a member of the New England Patriots and signed a two-year contract with the Broncos before the 2013 season. In his first year in Denver, he had 73 catches for 778 yards and 10 touchdowns.
- Molly Geary