You don't see this everyday. Tyreke Evans was a favorite of Danny Ainge dating back to when he was drafted. Evans would win the NBA's Rookie of the Year award in Sacramento, but never lived up to the hype after that. He had a solid bounce back season in Memphis in 2017/2018 before being traded to the Pacers where he played through this season.
In case you're curious, this isn't a PED thing.
Evans banishment is not performance enhancing related—this type of DQ is handed out when players test positive for drugs of abuse.