In a sidebar, Trump's attorney told Judge Merchan want to use ex-Cohen attorney Robert Costello to push back on Cohen's claims that he was worried about speaking to Costello because he was worried it would get back to Trump.

"That's not Mr. Costello's recollection," defense attorney Emil Bove said. "To rebut the government's pressure campaign theory -- that's why this evidence is admissible."

Bove told Merchan that Costello would testify that Cohen told him that Trump had no awareness of the Stormy Daniels' hush money payment.

Earlier today, Cohen testified that he lied to Costello about Trump's awareness because he did not trust Costello.

"The whole purpose was to make Mr. Trump sound threatening," Bove said.

"I don't think so," Merchan responded.

Prosecutor Susan Hoffinger argued that defense lawyers did not include Costello on their witness list or provide the exhibits related to his testimony.

"Rebutting the pressure campaign should have been part of their direct case," Hoffinger said.

Merchan called a brief recess to consider the arguments but ordered the parties to remain in the courtroom.

The prosecution objected to the defense calling Robert Costello, Michael Cohen's former attorney to the stand.

Out of earshot of the jury, prosecutor Susan Hoffinger asked Judge Merchan to omit Costello or limit his testimony to two questions.

"I think there's very limited testimony that's permissible here if at all," Hoffinger said.

The defense said it wants to use Costello to rebut Cohen's testimony about a "pressure campaign" carried out against him not to flip on Trump after Cohen made Stormy Daniels payment.

Costello, a longtime Trump ally, testified before the grand jury in March 2023 as an exculpatory witness at the request of Trump's attorneys.

On cross-examination, prosecutor Becky Mangold quizzed defense witness Daniel Sitko about the technical process for putting together the summary chart from cell phone records.

The defense attempted to show through the call summary that Cohen and his then-attorney Robert Costello spoke 75 times. On cross-examination, the defense paralegal conceded it wasn't quite that many.

After Sitko stepped off the witness stand, the defense called Robert Costello himself.

The defense called Daniel Sitko, a paralegal for defense attorney Todd Blanche.

Sitko introduced a summary chart of phone calls between Michael Cohen, his one-time attorney Robert Costello, and the law firm of Davidoff Hutcher & Citron.

Under cross-examination from prosecutor Susan Hoffinger, Michael Cohen's former attorney Robert Costello testified that he first met with Cohen at the urging of Jeffrey Citron, who scheduled the April 2018 meeting at the Regency Hotel.

Costello -- who has represented Leona Helmsley and George Steinbrenner in the past -- acknowledged that representing Cohen would have generated positive publicity for his law firm. But Costello said he did not have positive feelings about landing Cohen as a client.

"I didn't want him as a client with the firm," Costello said, pushing back on prosecutors' assertions that landing Cohen would have been a big win.

Jurors briefly saw an email where Costello's son congratulated him for landing Cohen as a client.

"Wow. That's big news. Congrats Dad. I hope this leads to a lot of good things coming your way," Costello's son wrote.

Asked about the FBI's raid on Cohen's office and hotel room, Costello said, "I wouldn't use the term raid -- they executed a search warrant."

"He was suicidal that day and acting very manic," Costello said about Cohen's behavior after the FBI searched on his hotel and office.

""You thought he was being a drama queen, didn't you?" Hoffinger asked.

"He was putting on quite a show and he explained to us that two nights before he was on the roof of the Regency Hotel and he was going to jump off and kill himself because he couldn't handle the pressure," Costello said.

Testimony subsequently concluded for the day, with Costello scheduled to return to the stand tomorrow.