The NFL never sleeps and neither does Denver Broncos GM John Elway. As the offseason progresses and teams get further into their organized team activities, the chaos of free agency has seemingly passed but that doesn't mean there aren't available players who could help a contender.
There are a handful of worthy players still on the open market. Let's take a look a the ones who could make sense for the Broncos.
Colin Kaepernick, QB
Kaepernick remains the best signal-caller on the market. Denver flirted with Kaepernick and the 49ers for the better part of the 2016 off season but have since moved on. While the Niners were abysmal in 2016 and Kaepernick was considered a distraction for his national anthem protest, he actually had a decent year on the field and could help a team as a veteran backup.
Kaepernick will only jump onto Denver's radar if a serious injury is suffered by incumbents Paxton Lynch or Trevor Siemian and even then, I would expect the Broncos to exhaust all options before considering him.
Mettenberger is an uninspiring quarterback but could also be an option for Denver if they suffer an injury at the position. Mettenberger spent the 2016 offseason with the San Diego Chargers and then-head coach Mike McCoy.
The Chargers and McCoy decided to waive Mettenberger with the roster cut-down to 75 players, electing to keep two quarterbacks. McCoy's familiarity with the former LSU Tigers signal-caller could make him an option, should the Broncos find themselves in need of another QB.
Anquan Boldin, WR
Boldin represents another injury contingency for Denver, but in this case, Boldin would likely have a huge role if signed. If injuries were to befall Demaryius Thomas or Emmanuel Sanders, Boldin could be signed to a cheap deal and offer either of the team's young quarterbacks a steady possession receiver.
The Broncos have depth at the position, much of which is unproven and inconsistent. If the team were to lose either one of their big-money guys, I would expect Denver to kick the tires on Boldin, especially after their interest in Victor Cruz.
Gary Barnidge, TE
Barnidge is the first player on this list that Denver should consider, regardless of injury. Virgil Green is what he is at this point and the Broncos have reportedly explored moving him multiple times.
Behind Green, Denver has a group of young promising players with question marks. Barnidge is just a year removed from a Pro Bowl season and endured a carousel of QBs with the Cleveland Browns in 2016.
Barnidge offers value as a safety blanket, but not much as a blocker. There has already been interest from Denver's coaches, who has reportedly already spoken with the pass-catcher.
King Dunlap, OT
Dunlap is another player who is familiar with McCoy. Should first round selection Garett Bolles suffer an injury, Denver could look at free agent options to replace him, or be forced to start Donald Stephenson, with the latter option being less than inspiring.
Nick Mangold, C
Mangold is no longer the elite player he once was, but could still be effective in the right situation. For Denver, the center position offers a big question mark right now with incumbent Matt Paradis recovering from surgery on both of his hips.
This is dependent on Paradis' recovery, if he falls behind schedule, Denver doesn't have many options to replace him on the roster. Second-year Connor McGovern has been serving as the first-team center in Paradis' absence.
Vance Walker, DL
Denver is very familiar with Walker after spending the past two seasons with the team. Walker was set to be Malik Jackson's replacement before tearing his ACL in the offseason last year.
The team showed interest in re-signing him earlier this year and still could. Also, color me skeptical of second round selection DeMarcus Walker's fit and role with the team.
Elvis Dumervil, OLB
Years removed from Faxgate, could Dumervil be an option for Denver? While a reunion is unlikely, with the retirement of DeMarcus Ware and the recent injury to Shaquil Barrett that could sideline him between 2-3 months, Dumervil coming back to the Mile High City as a situational pass rusher makes too much sense.
However, the money would have to be right for Elway to pull the trigger on Dumervil. For what it's worth, Denver's GM has shown zero propensity for bringing back guys he has parted ways with in the past.
Khalid Alshami is an Analyst for Mile High Huddle. You can find him on Twitter @KhalidHAlshami.