President-elect Donald Trump is considering Mitt Romney for the position of secretary of state, according to sources who spoke to NBC News.

CNN reported earlier that Romney has a meeting with Trump this weekend to talk about "governing moving forward" and a possible Cabinet position.

Romney is one of several people whom Trump is considering as secretary of state, along with former New York City Mayor Rudy Giuliani, former US Ambassador to the UN John Bolton, and South Carolina Gov. Nikki Haley.

Romney, the former Massachusetts governor, ran for president in 2012, but lost to President Barack Obama. Ever since, Romney and Trump have sparred publicly.

12 PHOTOS Members of the Trump family See Gallery Members of the Trump family NEW YORK, NY - MARCH 26: Ivanka Trump and Jared Kushner are seen on March 26, 2016 in New York City. (Photo by Tal Rubin/GC Images) BRIARCLIFF MANOR, NY - SEPTEMBER 21: Jared Kushner and Ivanka Trump attends the 9th Annual Eric Trump Foundation golf invitational at Trump National Golf Club Westchester on September 21, 2015 in Briarcliff Manor City. (Photo by Bobby Bank/WireImage) BRIARCLIFF MANOR, NY - SEPTEMBER 21: (L-R) Vanessa Trump, Donald Trump Jr., Ivana Trump, Eric Trump, Lara Trump, Ivanka Trump and Jared Kushner attend the 9th Annual Eric Trump Foundation Golf Invitational Auction & Dinner at Trump National Golf Club Westchester on September 21, 2015 in Briarcliff Manor, New York. (Photo by Grant Lamos IV/Getty Images) NEW YORK, NY - MAY 04: Jared Kushner and Ivanka Trump attend the 'China: Through The Looking Glass' Costume Institute Benefit Gala at the Metropolitan Museum of Art on May 4, 2015 in New York City. (Photo by Axelle/Bauer-Griffin/FilmMagic) NEW YORK, NY - JUNE 16: (L-R) Eric Trump, Lara Yunaska Trump, Donald Trump, Barron Trump, Melania Trump, Vanessa Haydon Trump, Kai Madison Trump, Donald Trump Jr., Donald John Trump III, Ivanka Trump, Jared Kushner, and Tiffany Trump pose for photos on stage after Donald Trump announced his candidacy for the U.S. presidency at Trump Tower on June 16, 2015 in New York City. Trump is the 12th Republican who has announced running for the White House. (Photo by Christopher Gregory/Getty Images) NEW YORK, NY - JUNE 07: Jared Kushner (L) and Ivanka Trump attend the American Theatre Wing's 69th Annual Tony Awards at Radio City Music Hall on June 7, 2015 in New York City. (Photo by Mark Sagliocco/Getty Images) BEDMINSTER, NJ - OCTOBER, 25: In this handout image provided by Ivanka Trump and Jared Kushner, Ivanka Trump (R) and Jared Kushner (L) attend their wedding at Trump National Golf Club on October 25, 2009 in Bedminster, New Jersey. (Photo Brian Marcus/Fred Marcus Photography via Getty Images) Donald Trump, president and chief executive of Trump Organization Inc. and 2016 Republican presidential candidate, center, speaks as his sons Donald Trump Jr., left, and Eric Trump, right, listen during a caucus night rally in Las Vegas, Nevada, U.S., on Tuesday, Feb. 23, 2016. Trump's dominating victory in the Nevada caucuses pushes him further out ahead of his nearest competitors for the Republican presidential nomination, giving his unorthodox candidacy a major boost heading into Super Tuesday contests next week. Photographer: David Paul Morris/Bloomberg via Getty Images 20/20 - Donald Trump and his family - including wife Melania Trump and his children - sit down for an interview with ABC News' Barbara Walters in a special edition of 20/20 airing Friday, Nov. 20 (10-11pm, ET) on the ABC Television Network. (Photo by Lorenzo Bevilaqua/ABC via Getty Images) DONALD TRUMP, JR., IVANKA TRUMP, ERIC TRUMP, TIFFANY TRUMP, BARBARA WALTERS LONDON, ENGLAND - JULY 28: Marla Maples (L) and Tiffany Trump have dinner at Sumosan on July 28, 2014 in London, England. (Photo by David M. Benett/Getty Images) BRIARCLIFF MANOR, NY - SEPTEMBER 15: (EDITORS NOTE: Retransmission of #455504994 with alternate crop.) (L-R) Donald Trump, Ivana Trump, Eric Trump and Lara Yunaska attend The Eric Trump 8th Annual Golf Tournament at Trump National Golf Club Westchester on September 15, 2014 in Briarcliff Manor, New York. (Photo by Dave Kotinsky/Getty Images) NEW YORK, NY - APRIL 18: Donald Trump, Eric Trump and Lara Yunaska attend the New York Observer's 2013 Young Philanthropy event at PH-D Rooftop Lounge at Dream Downtown on April 18, 2013 in New York City. (Photo by Laura Cavanaugh/Getty Images) Up Next See Gallery Discover More Like This HIDE CAPTION SHOW CAPTION of SEE ALL BACK TO SLIDE

Romney was one of Trump's most vehement critics during the Republican primary, speaking out against him frequently and refusing to give him an endorsement despite the fact that Trump endorsed Romney in 2012. Romney declined to say who he voted for in the general election.

After the election, Romney tweeted wishing Trump the best.

"Best wishes for our duly elected president: May his victory speech be his guide and preserving the Republic his aim," he wrote.

On Sunday, Trump said Romney called to congratulate him on his victory. Trump said the gesture was "very nice!"

During the primary, however, Romney and Trump sparred often and didn't have much nice to say about each other.

16 PHOTOS Twitter Reacts to Romney's Speech See Gallery Twitter Reacts to Romney's Speech Ironic @MittRomney admitting that he's not the businessman @realDonaldTrump is https://t.co/J54xeyiZ4z #MakeAmericaGreatAgain #Establishment I share my friend @MittRomney's concerns - hope American ppl think hard about who they want as Commander-in-Chief: https://t.co/yP6NqRDM17 There is a heckler now in the back of the room - he is being shouted down by the crowd. @MittRomney .@MittRomney, You will not stop the #TrumpTrain‼️You look like a complete LOSER. Very DESPERATE attempt. #Fail https://t.co/z10jKyxAbe Harry Reid listening to Mitt Romney go after Trump's tax returns like https://t.co/v4xqnRPXUo Never been more proud of @MittRomney. What a speech. Morally compelling. Tactically wise. Strongly worded. Mr @MittRomney if only YOU went after Barack Obama w/the same vigor in 2012. And to think, I campaigned for YOU. #StepAside #UlostTwice Donald Trump, Don't Take the Bait The "machine's" deception and nonsensical attack on Trump isn't really an... https://t.co/XkLVBlZJhh Well said, @MittRomney. -John https://t.co/pTwmBTaeAo In essence, is Mitt calling Trump supporters…what’s the word….stupid? Sending Mitt Romney out to attack Trump will only further galvanize his supporters. It also makes sets them up for a divisive spring battle. @MittRomney political indictment of @realDonaldTrump was the clarion call the #GOPEstablishment needed but one the GOP base does not want. A brilliant speech by @MittRomney. No one can ever question his love for our party and our country. #TrueLeadership #MittRomney .@MittRomney not holding back; unloading the full load on @realDonaldTrump. I bet the Donald is reflecting on his critique right now! The lack of loyalty is truly astonishing. #Romney https://t.co/wIrpD3DzMH @MittRomney speaks the truth. Our country deserves better than a crass bully who admires thugs like Putin. #NeverTrump #TeamMarco Up Next See Gallery Discover More Like This HIDE CAPTION SHOW CAPTION of SEE ALL BACK TO SLIDE

Last year, Romney called Trump's campaign rhetoric "problematic," and he continued his criticism of the Republican nominee through the primaries and general election.

In March, Romney delivered a speech calling Trump a "phony," "fraud," "con man," and "fake." He also said in May that it's "disqualifying for a modern-day presidential nominee to refuse to release tax returns to the voters." Trump has yet to release his tax returns, saying he will do so after a "routine audit" is complete.

Trump, in turn, torched Romney, calling him a "spoiled brat" and "nasty guy."

Romney's spokesperson did not immediately respond to a request for comment.

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