2. James Harden
Harden was the Rockets’ most important player. They built the team around his style and bowed to his wishes. Then he threw it all back in their face when he announced that he wanted to leave. This rocked the NBA.
He joined the Nets when they tried to buy a super team, but didn’t stay there for long. Finally, he ended up in Philadelphia and underperformed. It’s been a strange couple of seasons for Harden since he left his teammates high and dry (via Forbes).