"A Manhattan grand jury that is expected to vote soon on whether to indict Donald J. Trump may hear testimony Monday attacking the prosecution’s star witness, according to people with knowledge of the matter.

The testimony would come from a lawyer, Robert J. Costello, who would appear at the request of Mr. Trump’s lawyers, the people said. Mr. Costello was once a legal adviser to Michael D. Cohen, Mr. Trump’s former fixer, who has been a key witness for the Manhattan district attorney’s office.

Mr. Costello and Mr. Cohen had a falling out, and Mr. Costello would appear solely to undermine Mr. Cohen’s credibility, the people said."

https://archive.is/wHKdU