It's a bit more complicated than just "tag and trade".  You gotta be willing to gamble that you can live with any outcome.

First off, an NFL team can franchise tag a player and then trade them if the player signs a tender with the new team.

Explanation
The franchise tag is a one-year contract that teams can use to keep players from becoming unrestricted free agents.
There are three types of franchise tags: non-exclusive, exclusive, and transition.

The Non-exclusive Tag allows the player to negotiate with other teams.
If a player is tagged with a non-exclusive tag and signs with another team, the original team can match the offer or receive two first-round draft picks.
The player must sign the tender to be traded to another team.

What happens if a player doesn't sign a long-term contract?
If a player doesn't sign a long-term contract by the deadline, they will play on the one-year deal or hold out.
If a player holds out, they may not earn a salary.
If a player holds out for a long time, they may sign a deal with another team in the following offseason.

The NFL Exclusive Franchise Tag is a one-year contract offer to a player that prevents them from negotiating with other teams. The tag is more expensive than the non-exclusive tag and is rarely used.

Rules
The tag's value is the greater of the player's previous salary multiplied by 120% or the average of the top five salaries at their position
The tag's value increases each time a player is tagged
The player's team has all negotiating rights
The tag counts fully against the team's salary cap
The team can withdraw the tender at any time, making the player an unrestricted free agent

How it works
The team determines if any pending free agents are worth tagging
The team offers the player a one-year contract
The player can negotiate with other teams, but the team can match any offer or receive two first-round picks if the player signs with another team
Comparison to the non-exclusive tag
The non-exclusive tag is more common than the exclusive tag
With the non-exclusive tag, the player can negotiate with other teams, but the original team can match the offer

The The NFL Transition Tag is a designation that allows teams to retain unrestricted free agents. It gives the original team the right to match any offer made by another team.
Rules
Eligibility: The transition tag can be used on impending unrestricted free agents.
Salary: The transition tag salary is based on the average of the top 10 salaries at the player's position over the previous five years.
Matching: The original team has seven days to match an offer sheet. If they don't, they receive no compensation.
Rescinding: A team can rescind a transition tag, but they can't use it again until the next season.
Signing a contract: If a player signs a contract after receiving the transition tag, the original team can't use the tag again until the contract expires.
Number of tags: Each club can only use one transition tag per offseason.
Benefits
The transition tag is cheaper than both franchise tags.
Players can negotiate with other teams while on the transition tag.
Example
In 2024, the New England Patriots used the transition tag on safety Kyle Dugger.

https://fox59.com/news/national-world/lo...-bowl-lix/

Just 27 years old. Wife died last April in a car crash, leaves behind a 2 year old.

Jones has had two contracts in the NFL so far.
His first from 2019 was $25,664, 4 years, fully guaranteed.
His extension in 2023, as has been well-chronicled was a 4-year $160mm deal, with a total $92mm guaranteed.

So since 2019, he's been able to pocket $117,664,000 +/-, not including the $375,000 he made signing with the Vikings.
He's still young.

I am going to forecast here that in order to reinvigorate his career in the NFL, he will seriously look at a full year studying under KOC and will be ready on a moment's notice to step in if JJM falters.  I'm going out on a limb here that he's going to look at the long game, since he's already made over $100mm and will sign for $5-7mm+/- as the Vikings backup for one year.

Talk about going out on a limb with my prediction...

Jared Allen gets the call from Canton.

Well deserved. And....Vikings having 'ongoing dialogue' with Uncle Sammy:

https://www.espn.com/nfl/story/_/id/4372...am-darnold

RIP.

Im sure this will bring some movement to the Bears stadium situation.  I had heard this was something those involved were expecting and waiting on.

Very long, but very interesting conversation with cap expert. 

https://kstp.com/minnesota-sports/watch-...offseason/

Just hired as their OC. That sucks. Was hoping we'd have him for at least another season, as he seems someone who was very valuable to KOC and the QB room.

https://www.espn.com/nfl/story/_/id/4371...oc-jaguars

Melbourne in 2026. Europe is one thing, a 10 hour flight from LA. But Australia? That's a 22-hour flight from New York.