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Is the most realistic destination for KD up north? (1:00)

The five most realistic landing spots are identified by Bobby Marks. The song is called "1:00."

6:02 PM ET

One of the biggest negotiations in NBA history began when Kevin Durant told the Brooklyn Nets that he wanted to leave the team.

We don't know how to know this. Half of the teams in the league have already inquired. It's not the first time a great player has changed teams. Over the past 20 years, it has happened time and again, from Kevin Garnett to Kevin O' Neal, just to name a few

Here are three lessons learned from some of the biggest trade demands in NBA history in order to process what a Kevin Durant deal would look like.

Lesson 1: Don't expect to get the other team's best player

The best young player on the other team will be asked by the team in Brooklyn. That's what the Los Angeles Lakers did when they began discussing parameters to land O' Neal. What is their target? D Wade is a young shooting guard.

The phone was hung up.

The Los Angeles Clippers called back with a different request, centering a trade around emerging young forward Lamar Odom, who had been pursued by the Miami Heat for years before landing in LA

The Heat said yes.

So it was resolved. Los Angeles received Miami's second- and third-best players, along with draft picks, in exchange for O' Neal.

The Nets will be looking for a premium player from every one of the other teams, but it is more likely that the package will include promising young players and a lot of draft picks.

Lesson 2: The stars often have a say

When a star player makes a trade demand, they are usually involved in the negotiations.

There were failed negotiations between the Lakers and Bulls. Luol Deng was the centerpiece going back to Los Angeles in every package that the Lakers proposed, despite Kobe Bryant's decision to play for the Bulls.

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Bryant would not approve a trade to Chicago that included Deng. What's the reason? He didn't want to end up in a situation where he wouldn't have a chance to win a title.

The whole thing stopped.

How is this relevant to what's happening with KD. The second reason is that teams aren't going to put themselves in a position in which they have to trade so much of their roster that they don't make the playoffs. With the chance of joining a team that isn't able to contend, he won't be very happy.

Lesson 3: Sometimes it takes a surprising missing piece

It's not always the case that the Nets have everything the team wants in exchange for a player of the caliber of KD.

The last time the league underwent a shakeup like this one, it was the LA Clippers who were the first to learn of it.

When Leonard told the Clippers that he wanted to play with Paul George, he had a condition.

The problem was that George was under contract for multiple seasons.

Oklahoma City's executive vice president and general manager, Sam Presti, got a huge haul of players, including Shai Gilgeous, from the Clippers in exchange for Leonard.

There will be teams that have some assets Brooklyn wants. It would be difficult for any team to check all the boxes in order to get the best return for a star player.

The Nets can tell those teams what they want, and work with them to get a deal over the line.

Negotiating is unique. History shows that the Nets will be working to find an acceptable deal for their star player.