Mick Mulvaney? Larry Kudlow? Here are the possible contenders to replace Gary Cohn

Gary Cohn's replacement could alter Trump's economic policy direction.

On Tuesday afternoon, White House economic adviser Gary Cohn abruptly announced his resignation, leaving yet another major job vacant at 1600 Pennsylvania Avenue.

While the White House has not yet announced the president's pick to replace Cohn, names from inside and outside the White House are being floated around.

In a press briefing Wednesday with reporters, White House press secretary Sarah Sanders said she will not be offering a list of contenders. "I can tell you that the president has a number of people under consideration and he's going to take his time making that decision," she said.

FreedomWorks President Adam Brandon said in a statement, "The White House deserves to have the finest economic minds in the room, and Larry Kudlow is the real deal."

Mulvaney and Knight are two other possibilities from inside the White House.

As OMB director, Mulvaney has institutional knowledge of the West Wing and received praise for his handling of the White House budget.

"He's smart and Trump likes him," said Moore. "But the thing about Mulvaney is that he's already doing a great job at OMB and he's already running the consumer finance protection board so he'd have to shuffle things around."

Knight currently serves on the NEC as special assistant to the president for tax and retirement policy. A former executive at Fidelity Investments, she played an integral role in the roll out of the White House’s tax plan.

Trump’s pick would oversee a highly respected staff within the White House.

"One thing Gary’s done very well is put together one of the strongest staffs at the White House," said Lanhee Chen, an economist at Stanford University's Hoover Institute. "The NEC staff is highly talented, very motivated, incredibly well-staffed in terms of intellectual capacity and subject matter expertise.”

One source in close contact with the NEC office said there could be even more staff turnover. The source said staffers are worried about the direction of the White House’s economic policy.

"People are worried Gary's departure signals a pretty significant shift in economic policy from this White House from what has been so far very sound economic policy that the broader conservative movement has been supportive of,” the source said. "They're very concerned about what’s happening inside the White House in terms of a more protectionist point of view gaining a foothold and the president being sympathetic to that thinking."