Shelly Sterling is reportedly seeking an emergency court order for a hearing so a judge can confirm her authority to sell the Los Angeles Clippers, according to an individual familiar with the matter.
The individual was not authorised to speak publicly and spoke on condition of anonymity.
Shelly Sterling brokered what would be a record-breaking $US2.0 billion ($A2.2 billion) deal with former Microsoft CEO Steve Ballmer to sell the team after her husband and co-owner Donald Sterling made racist comments to a girlfriend that were recorded and publicised.
The NBA moved swiftly to oust him as an owner, but Donald Sterling has vowed not to sell and is suing the NBA.
Shelly Sterling contends she is the sole trustee of The Sterling Family Trust, which owns the team.
Donald Sterling was stripped as co-trustee after two neurologists last month determined he was suffering from dementia and "mentally incapacitated" under the trust's conditions, according to a person who is familiar with the trust and the medical evaluations but could not speak publicly.
The aim of Sterling's court bid is to have a judge confirm provisions of the family trust to ensure the Ballmer sale moves forward without a hitch.
Donald Sterling has the right to present his side at any hearing and appeal any decision.
His lawyer Maxwell Blecher said a representative for Donald Sterling will likely be at any hearing but declined to comment further on Tuesday.
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