In this 2017 photo, State Department spokeswoman Heather Nauert speaks during a briefing at the State Department in Washington.
WASHINGTON President Donald Trump is expected to nominate State Department spokeswoman Heather Nauert to be the next USA ambassador to the United Nations.
Nauert and the State Department did not immediately respond to requests for comment.
One of the reports came from Fox News, where Ms Nauert has previously worked as a presenter.
Nonetheless, during her two-year stint, Haley became a darling of the Trump administration and the pro-Israel community for her vociferous defense of the Jewish state at the United Nations, a body often seen as hostile to Israel. Nauert would need to be confirmed by the Senate before taking up the role.
She will take over from Nikki Haley who announced her resignation in October.
Having the direct support of the president and Secretary of State, Mike Pompeo, could buttress her image, however, among global diplomats at the United Nations, who have bristled at Donald Trump's "America First" foreign policy.
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However, a USA official told NBC that Khalid is not expected to be expelled from the country and would continue on as ambassador. Saudi Arabia's public prosecutor has said Asiri was the one who ordered the operation to repatriate - but not kill - Khashoggi.
Trump has been known to change course on staffing decisions in the past.
Bloomberg said Ms Nauert would be an unorthodox choice, given the little experience she had in government or foreign policy before she took up the role at the state department.
The president picked Nauert after considering other potential nominees including former White House aide Dina Powell, ambassador to Canada Kelly Craft and ambassador to Germany Ric Grenell.
The Illinois native would follow in the footsteps of Haley, a former governor of South Carolina; Samantha Power, a Pulitzer Prize victor; Susan Rice, a Rhodes Scholar; and former National Security Council and national security officials such as Madeleine Albright.
"If Nauert is nominated and approved, people will be interested to see whether she's willing and able to do the diplomatic toil or whether she will see this as an extension of the spokesman position and focus more on presentation of USA position before the Security Council", said Gowan.
Trump told reporters last month the former Fox News anchor was "under very serious consideration".
Haley also quelled speculation about a potential 2020 bid for president.