Twitter’s board is in talks to sell the company to Tesla CEO Elon Musk and could settle on a deal as soon as Monday, April 25, Reuters reported.

The two sides met Sunday — just 10 days after Musk offered $43 billion ($54.20 a share) for the social media platform, according to Wall Street Journal sources. Musk had said this was his “best and final” offer.

The New York Times reported that the talks between Musk and Twitter’s 11-member board went into the early hours Monday, and that the two sides appeared to be “nearing a deal,” though it could still fall apart. They were discussing finer details, including scheduling and fees to be paid if a signed agreement fell apart.

Twitter on Monday appeared set to accept Musk’s offer of $54.20 a share, Reuters reported,citing sources. The company may announce a deal later in the day, after its board has met, according to the wire service.

Twitter had been chilly about the offer, but then Musk revealed Thursday that he had amassed $46.5 billion in financing to buy the company.

The offer to take the company private by the often-unpredictable entrepreneur rattled Twitter fans fearful that Musk’s anything-goes mission could destroy what has become a kind of moderately civilized mass town square. And stockholders have been skeptical that Musk would actually get the money and his proposal together.

Musk pushed hard for the deal on Friday when he met privately via video calls with several key shareholders to pitch his purchase, according to the Journal. He vowed to solve the “free speech” issues he’s convinced are hurting the platform.

Few details of his plan were immediately available, but he has tweeted about reducing advertising and allowing longer tweets.

Some shareholders praised Musk after the meetings.

“He has an established track record at Tesla,” Lauri Brunner, who manages Thrivent Asset Management LLC, told the Journal. “He is the catalyst to deliver strong operating performance at Twitter.” Thrivent holds a roughly 0.4% stake in Twitter worth $160 million. It’s also a Tesla shareholder.

Musk has said he was considering taking his bid directly to shareholders with a tender offer. But even with major shareholder support he would need a strategy around the company’s so-called “poison pill,” a maneuver that would effectively block him from building his stake to 15% or more.

Twitter’s shares have generally been trading below his offer price since he made the bid on April 14, typically a sign shareholders are skeptical a deal will happen. But they were up 4% on Friday, noted the Journal.

Twitter is scheduled to report first-quarter earnings Thursday.

Liza Hearon contributed reporting.

This article originally appeared on The HuffPost