As we noted Thursday, trading a player whom other teams expect to be released anyway can be difficult, but it appears the Broncos have suitors for Clady's services.
Jason Cole of Bleacher Report heard from a source on Friday that "4-5 teams" are considering a trade for the four-time Pro Bowler. With that sort of interest, Denver should be able to get at least some compensation, though it would be surprising if it were more than a mid- to late-round draft pick considering Clady's age (29), salary ($9.5 million in 2016) and injury history (30 games missed since 2013).
As for teams that might be interested in Clady, Cole didn't mention any, but free agency thus far can offer some clues. The New York Giants and Detroit Lions were both interested in Okung and haven't signed an alternative option. Dave Birkett of the Detroit Free Press expects the Lions to keep searching for a left tackle, noting that "some in the organization believe [incumbent LT Riley Reiff is] better suited to play right tackle."
Meanwhile, with Okung's departure, the Seattle Seahawks have a gaping hole at left tackle on an already shaky offensive line. Likewise, the Chicago Bears have an opening on the left side after releasing Jermon Bushrod, and head coach John Fox knows Clady well from his time in Denver.
Among those four potential suitors, only the Seahawks would need to make a roster move to find room for Clady under the salary cap.
We should learn much more in the next day or two, but it's reasonable to guess these teams each have at least some interest. How serious that interest is will likely determine what Denver winds up getting in return.