The former Chief, who will turn 32 next month, ranks 12th in NFL history with 128.5 career sacks.
Titans corner Alterraun Verner says joining the Broncos "would definitely be a good situation for me," during an appearance on SiriusXM Radio on Monday.
The 25-year-old corner did not indicate whether Denver had contacted him during the legal tampering period.
According to Cowboys beat man Calvin Watkins, Dallas has expressed interest in Broncos linebacker Wesley Woodyard.
Woodyard was miscast for Denver at middle linebacker last season, and his fellow former UK Wildcat, Danny Trevathan, proved better in Woodyard's old weakside spot.
The 27-year-old is said to be in search of a starting Will job elsewhere.
Ward, who turned 27 in December, was drafted 38th overall in 2010 by then-Cleveland GM and current Broncos pro personnel director Tom Heckert.
Denver has already signed a slew of former Browns players this offseason, but Ward would be the highest profile addition, by far.
Mitchell spent his first four seasons with the Raiders, who drafted him in the second round of the 2009 Draft.
As expected, the Broncos have tendered restricted free agents Chris Harris (second round, $2.187M) and Mitch Unrein (right of first refusal, $1.431M), and nontendered Trindon Holliday.
If you don't consider middle linebacker one of Denver’s biggest issues, please raise your hand. There will be men in white coats coming around to take you for a nice car ride soon...
We all know that the Mike has been problematic for Denver ever since Al Wilson went down with a neck injury back in 2006.
There’s been a laundry list of people who stepped in and did their best, but none were truly up to the job. I thought Wesley Woodyard was the best of the group (especially in coverage), but he’s a bit too small to hold up to the runs up the middle. That showed last season.
According to PFT, the Broncos have opted not to tender return man Trindon Holliday as a restricted free agent.
Instead, the boom-or-bust player will be free to sign with any team, for a salary that we believe could be as low as $570K.
Not defending #colts paying D'Qwell Jackson $22 mill/$11 mill guaranteed. But Denver, Tenn and Miami would have ponied up that much.— Mike Chappell (@mchappell51) March 6, 2014
Jackson had visited Denver, Tennessee, and Miami, and had reportedly drawn interest from Arizona and Minnesota as well.