Several Brooklyn Nets fans have a tinge of regret that the team had to give up center Jarrett Allen in the transaction that gave them James Harden. After all, Allen is one of the best up-and-coming big men in the NBA.

Now, in a recent rumor, the Nets reportedly actually laid out all their cards just to keep Allen. Things just didn't pan out as they planned.

ESPN's Brian Windhorst spilled the behind-the-scenes details of the blockbuster four-team trade that brought Harden to the Nets. According to Windhorst, Brooklyn placed guard Landry Shamet on the table.

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“I talked to two different teams that the Nets offered Landry Shamet to in the last week attempting to get a first-round pick,” Windhorst said on his ESPN podcast, per Nick Friar of USA Today. “The were trying to keep Jarrett Allen, as you can imagine. To get the fourth first-round pick, they were trying to find a team that would give them anything, so they shopped Landry Shamet pretty hard from what I understand.”

Shamet would've been a pretty decent pick-up. He's one of the more reliable young guards today—someone who has a smooth stroke from the perimeter and from downtown. As the 26th pick of the 2018 NBA Draft, analysts tagged him as one of the hidden talents of his batch, so much so that he was selected into the NBA All-Rookie Second Team. Note that in his first year in the league, he divided it between the Philadelphia 76ers and the Los Angeles Clippers.

Understandably, the Cleveland Cavaliers saw much more potential in Jarrett Allen despite having a bunch of centers in their roster already. His time in Brooklyn might have been short-lived, but the Nets did try their best to keep the young center in the fold.