Giuliani previously said he is working pro bono as a private defense counsel for the president.
The deal with Lutsenko was never finalized and Giuliani told the Times he also rejected deal with the Ukrainian government because "it was too complicated".
The better question is, why wouldn't he?
"Clear criminal liability", Shugerman wrote, noting the conduct was remarkably similar to what led to federal charges against former Trump campaign chairman Paul Manafort and former deputy campaign chairman Rick Gates.
But according to a rough transcript of a call Trump held on July 25 with Ukraine's president, Volodymyr Zelenskiy, Trump brought up Giuliani's name - calling him "a highly respected man" - and encouraged the Ukrainian leader to talk to him.
The next day, Mr. Giuliani decided he couldn't represent Mr. Lutsenko personally because he believed doing so would pose a conflict with his representation of the president, he said, but continued to consider the Ministry of Justice contract.
When asked by reporters about Giuliani's remarks Monday, before the O'Reilly interview, Trump had stuck by his personal attorney. "But what I can tell you is that it looks like Rudy Giuliani, at a minimum, is violating legal ethical rules in the way he is dealing on behalf of his client".
As House impeachment investigators dig into Trump and Giuliani's scheme to use U.S. -Ukraine relations to manufacture dirt on Trump's political enemies, Giuliani has mentioned on several occasions having some mysterious "insurance" in case Trump tries to pin the blame on him. "So you didn't direct him to go to Ukraine to do anything or put any heat on them?" "No, I didn't direct him".
"I think he's done work in Ukraine for years", Trump said during an interview for former Fox News anchor Bill O'Reilly's "No Spin News" program.
Lutsenko was also a vocal opponent of former U.S. Ambassador to Ukraine Marie Yovanovitch.
Federal prosecutors in NY are looking into the ties of Giuliani and his associates had to Ukraine's state-run oil-and-gas company.
Trump's comments contradict testimony from U.S. Ambassador to the European Union Gordon Sondland.
Many diplomats and foreign policy experts testified before the intelligence committee that they were uneasy with Trump's efforts in Ukraine, and many came to understand that the White House did place conditions at a minimum on a White House meeting and possibly over military aid.
Rudy Giuliani is brushing off reports that showed he was pursuing business deals with the Ukrainian government as he sought evidence of alleged corruption by the Bidens.
It has always been clear that Trump and Giuliani were in close coordination on the whole scheme.
Mr Giuliani told the Times that Mr Lutsenko pitched the idea of hiring him to help deliver information about corruption in Ukraine to USA authorities, but Mr Giuliani said he concluded it would be a potential conflict of interest for him to represent Ukraine that way as he was working for Mr Trump for free.
Trump was so intimately involved that Giuliani was keeping him abreast of developments while the meetings were still in progress.