Special counsel Robert Mueller wants to grill Russian pop star Emin Agalarov, who helped set up the June 2016 Trump Tower meeting between Team Trump and Russians, including a Kremlin-connected lawyer who had offered dirt on Hillary Cllinton.

“Conversations are ongoing” about a potential interview, Agalarov’s lawyer, Scott Balber, said in an email to NBC News. “Unclear how this will play out.”

Balber did not say whether Mueller’s investigators also wanted to question Agalarov’s father, Aras Agalarov, a billionaire with ties to Vladimir Putin.

The Agalarovs were partners when the Trump Organization hosted the 2013 Miss America pageant in Moscow, and they also played a key role in arranging the Trump Tower sitdown, which included

Donald Trump Jr.; Jared Kushner, ex-campaign chair Paul Manafort and the Russian lawyer, Natalia Veselnitskaya and other Russians with connections to Putin.

Aras Agalarov had told a pal, the music producer Rob Goldstone, that Veselnitskaya had “information that would incriminate” Clinton, and Goldstone wrote in an email to Trump Jr. on June 3, 2016, requesting a meeting.

“I love it,” Trump Jr. said in his reply, and the meeting took place days later, on June 9.

Trump Jr. and Sr. have both minimized the meeting, saying nothing of substance came from it.