He is joining Altman in the new Microsoft effort, Nadella said.
Swisher writes that Altman is ambivalent about coming back and would want significant governance changes.
The Wall Street Journal reports that it is OpenAIs investors that are pushing for his return.

OpenAI CEO Sam AltmanJustin Sullivan/Getty Images
Thrive Capital is its second-largest shareholder.
A letter sent to employeesthis morning blamed a breakdown in communication between Altman and the board.
Last night, Sam got a text from Ilya asking to talk at noon Friday, Brockman wrote.

Sam joined a Google Meet and the whole board, except Greg, was there.
Ilya told Sam he was being fired and that the news was going out very soon.
I continue to believe in the mission of creating safe AGI that benefits all of humanity.
A blog post added that the board no longer has confidence in his ability to continue leading OpenAI..
He was replaced on an interim basis by Chief Technology Officer Mira Murati.
He will remain in his role at the company, reporting to the CEO.
I loved my time at openai, Altman tweeted, sans capitalization.
It was transformative for me personally, and hopefully the world a little bit.
most of all i loved working with such talented people.
will have more to say about whats next later.
ChatGPT is trained to create text and images through a process of feeding material into it.
Copyright holders of those works have voiced concerns that the system erodes the value of their creations.
Microsoft has invested about $13 billion for a 49% stake in the company.
The board remains fully committed to serving this mission.
We are grateful for Sams many contributions to the founding and growth of OpenAI.
At the same time, we believe new leadership is necessary as we move forward.
We have the utmost confidence in her ability to lead OpenAI during this transition period.