President Trump's lawyer asked for a "heads up" from former national security advisor Michael Flynn’s attorney as Flynn was preparing to cooperate with Special Counsel Robert Mueller's investigation according to a transcript released by federal prosecutors on Friday.

Why it matters: The message is included in Mueller's report, but illustrates how people working closely with the president tried to exercise their influence over those who were in contact with Mueller, per Bloomberg.

"If, on the other hand, there's information that implicates the President, when we've got a national security issue, or maybe a national security issue, I don't know...some issue, we've got to deal with, not only for the President, but for the country. So...uh..you know, then-then, you know, we need some kinds of heads up."

— President Trump's lawyer John Dowd to Michael Flynn's lawyer Rob Kelner

Read the transcript:

Go deeper: Michael Flynn assisted in Mueller's obstruction and WikiLeaks investigations