Dowd confirmed his decision in an email Thursday to The Associated Press, saying, "I love the President and wish him well".
Dowd has been at odds with the other attorneys over the possibility of Trump doing an interview with Special Counsel Robert Mueller, sources said. "Office of Professional Responsibility and Attorney General Jeff Sessions and bring an end to alleged Russian Federation collusion investigation manufactured by McCabe's boss James Comey based upon a fraudulent and corrupt dossier", Dowd wrote.
On Thursday, the president reaffirmed his willingness to meet with Mueller, telling reporters following a trade event at the White House: "Yes, I would like to".
Washington lawyer Joseph diGenova will also join the legal team this week, according to attorney Jay Sekulow, who also represents Mr Trump.
But there's a division among Trump attorneys: Don McGahn, the official White House counsel, prefers to resist the special counsel's investigation.
Jay Sekulow, who is also on Trump's Russian Federation probe team, also confirmed the departure to the Associated Press.
DiGenova had publicly argued that Trump had been "framed" by Federal Bureau of Investigation and Justice Department officials.
Mr. Trump now is veering toward the combative approach supported by his longtime personal lawyer, Marc E. Kasowitz, who stepped back last summer but was still in contact with the president occasionally over the past several months.
John Dowd recently called for the investigation to end. But Mr. Trump did add a new lawyer, days later. The attorneys conducted their sensitive conversation at an outdoor table at BLT Steakhouse, a popular DC restaurant a few doors down from the Times' Washington bureau and close to the offices of a slew of media organizations closely covering Trump's legal maneuvers.
Mr Dowd had taken over the lead lawyer role last summer from NY attorney Marc Kasowitz, who has always been by Mr Trump's side.
Jens David Ohlin, a vice dean at Cornell Law School who's an expert on criminal law, said Trump's legal team consisted of "two camps".
Dowd's removal really shows that Trump just wants "to take a more aggressive stance [in the case]". The article reports that, in recent weeks, Dowd had "disagreed vehemently with Trump over a legal strategy".