Source: Shelley Sterling, ex-Microsoft CEO talk Clippers sale

(CNN) -- Los Angeles Clippers co-owner Shelly Sterling met with former Microsoft CEO Steve Ballmer over the weekend to discuss him potentially purchasing the team, a source familiar with the matter told CNN.

Ballmer is just one interested suitor, and Sterling, who wants to expedite the team's sale, is accepting bids from other interested parties, though the source didn't elaborate.

That news follows Friday's reports that Sterling, according to a source familiar with the situation, and her estranged husband, Donald, agreed that Shelly Sterling would try to sell the NBA franchise voluntarily even as the league prepares a vote on a forced sale.

Any move by the Sterlings to sell the team voluntarily would be subject to the NBA Board of Governors' approval.

The NBA said Friday that its team owners would vote June 3 on whether to force a sale because of racist remarks that Donald Sterling made. There was no indication that this plan changed with Tuesday's news.

The league is fine with Shelly Sterling leading the efforts to sell the team, so long as neither she nor Donald Sterling retain any equity whatsoever in the Clippers, said a separate source familiar with the situation.

The Sterlings appear to be running out of options -- short of suing the league -- and analysts say such a lawsuit wouldn't be inconceivable, as Sterling is an attorney well versed in litigation.

Meanwhile, pressure grows for Donald Sterling, a real estate billionaire. He faces a deadline Tuesday to respond to the NBA's proposal to terminate his ownership in the team because of racist remarks he made.

The NBA has banned Donald Sterling for life. The ban and pending June vote -- along with a $2.5 million fine against Donald Sterling -- arise from how he slurred African-Americans.

A voluntary sale would be a new maneuver for the Sterlings. Earlier this month, Donald Sterling hired an antitrust lawyer to fight the NBA about the proposed forced sale, and his wife previously said she wanted to keep an ownership stake in the team, but doesn't want to be the controlling partner.

The couple own the team through a trust.

The NBA contends it was damaged by the 80-year-old's racist remarks to associate V. Stiviano, 31, that were captured on an audiotape and posted online in April by TMZ and in an interview with CNN's "Anderson Cooper 360°."

"Among other things, Mr. Sterling disparaged African-Americans and 'minorities'; directed a female acquaintance not to associate publicly with African-Americans or to bring African-Americans to Clippers games; and criticized African-Americans for not supporting their communities," the NBA said in a recent statement.

In order to terminate the Sterlings' franchise rights, three-fourths of the team owners (23 of 30) would have to vote to sustain the charge and force a sale. Because Sterling is banned from any NBA activities, he is not allowed to vote, but the Clippers will have a vote, the NBA said.

CNN's Rosalina Nieves.Jill Martin, Michael Martinez and Brian Todd contributed to this report.

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