I don't think the NBA can ban a team over an opinion of the owner. The result would be an immediate lawsuit by every team member for interference with contract.
They can if the other owners go for it, it is a franchise, it has by-laws and rules that as an owner you have to agree with before they will approve your membership. The owners vote to allow the sale of a team, they can vote to ban your team.
who is talking about banning a team?...no one in the NBA is....
If Sterling refuses to sell his team the NBA can ban Or disband the team.
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