In the statement, Giuliani is cited as saying he wants this matter resolved quickly for the good of the country.
The former presidential candidate told CNN his role will be "limited", adding that his focus will be on giving the Russian Federation collusion probe the "little push" it needs to come to a conclusion. "My advice onto Mueller has been that: He ought to be allowed to do his own job, he'therefore entitled to do his own position".
The Raskins are not commenting about joining the Trump team.More news: Pompeo confirmation winnowing down to a handful of undecided Dem
Trump on Wednesday played down, but didn't put to rest, rumblings he wanted to fire Mueller and Rosenstein.
Giuliani, a longtime Trump ally and former federal prosecutor, said he made his decision in recent days, and had dinner with the president at his Mar-a-Lago resort in Florida last week.
His law firm also released a statement, confirming Giuliani's departure.
In addition to Giuliani, Sekulow said that Serene Raskin and Marty Raskin, both former federal prosecutors, also would be part of the team. The Washington Post hints at some rumors going around D.C. with this line about Trump's newest lawyer: "He has been frequently been seen holding court at the Trump International Hotel in Washington, dining and drinking with friends and browsing for gourmet cigars".
Some of their cases high-profile white collar cases include representing federal immigration agents suspected of extorting money from drug kingpins, mob suspects, and a contractor tied to the 1996 Valujet plane crash in the Everglades.
U.S. President Donald Trump says he wants to get the Mueller probe "over with, done with" so he can move on with business. He campaigned with Trump and gave a major speech in support of him at the Republican National Convention. "But he'll be good on TV, and I guess that is what matters to Trump".