The Bounce: The player disempowerment era. Plus: NBA poster nostalgia

The Bounce Newsletter | This is The Athletic’s daily NBA newsletter. Sign up here to receive The Bounce directly in your inbox.On this date in 2007, Kevin Garnett was traded from the Minnesota Timberwolves to the Boston Celtics. KG had to be convinced to be traded from Minnesota, and it wasn’t until the Celtics secured Ray Allen in a deal that KG finally agreed. The Wolves received Al Jefferson, Sebastian Telfair, Ryan Gomes, Gerald Green, Theo Ratliff and two first-round picks that became Jonny Flynn and Wayne Ellington. (This is actually a perfect trade for a future edition of Tradeback Tuesday later this summer. Maybe even next week …)End of an EraGone are the days of player empowermentWhen LeBron James held a television special with ESPN in 2010 to announce he was taking his talents to