The warning signs were there for the Dallas Mavericks before they signed D'Angelo Russell.
He had just finished the worst season of his career, his impact on winning has always been questioned, and his efficiency had steadily declined over the last few seasons. On top of that, the Mavericks were trying to build their identity around defense, and that isn't one of his strong suits either.
What could possibly go wrong for Dallas? They needed someone to run the offense for the first few months of the season, and it always seemed like he was going to end up as a Maverick heading into free agency.