President Trump is reportedly planning to oust Secretary of State Rex Tillerson Rex Wayne TillersonGary Cohn: 'I haven't made up my mind' on vote for president in November Kushner says 'Alice in Wonderland' describes Trump presidency: Woodward book Conspicuous by their absence from the Republican Convention MORE, with CIA Director Mike Pompeo Michael (Mike) Richard PompeoOvernight Defense: House Democrats unveil stopgap spending measure to GOP opposition | Bill includes .6B for new subs | Trump issues Iran sanctions after world shrugs at US action at UN Navalny calls on Russia to return clothes he was wearing when he fell ill US issues Iran sanctions to enforce UN action ignored by international community MORE potentially replacing him.

The swap could come in the next several weeks, The New York Times reported, citing senior administration officials. Still, the Times added that it is not clear whether Trump has approved the plan, which was devised by chief of staff John Kelly John Francis KellyMORE.

Some administration officials had in the past suggested Tillerson could be replaced by U.S. ambassador to the U.N. Nikki Haley Nimrata (Nikki) Haley'The soul' versus 'law and order' Author Ryan Girdusky: RNC worked best when highlighting 'regular people' as opposed to 'standard Republicans' GOP lobbyists pleasantly surprised by Republican convention MORE, but Pompeo has become the favorite to take the role due to his rapport with Trump, the Times reports.

The Associated Press also reported that the Pompeo swap is under consideration.

Under the plan, Sen. Tom Cotton Tom Bryant CottonGOP brushes back charges of hypocrisy in Supreme Court fight Trump uses bin Laden raid to attack Biden Battle lines drawn on precedent in Supreme Court fight MORE (R-Ark.) would replace Pompeo as CIA chief once Pompeo is moved to the State Department.

Cotton is expected to take the CIA job if offered, according to the Times. A spokeswoman for Cotton said his focus is on serving Arkansas in the Senate.

Tensions between Trump and Tillerson have been brewing for months.

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Earlier this year, Tillerson denied an NBC News report that top Trump administration officials, including Vice President Pence, had urged him not to step down from the State Department.

"The vice president has never had to persuade me to remain as secretary of State because I have never considered leaving," Tillerson said.

Tillerson, at the time, refused to directly address the report that he referred to Trump as a "moron," saying that he would not “deal with petty stuff like that.”

Trump and Tillerson have also clashed over other issues.

In October, Trump rejected the idea of negotiating with the North Korean regime, saying he told Tillerson he is "wasting his time trying to negotiation with Little Rocket Man."

"Save your energy Rex, we’ll do what has to be done!” Trump tweeted at the time.

Tillerson reportedly wanted to remain in his position until the end of the year "to retain whatever dignity he could," according to the Times.

This story was updated at 10:46 a.m.