Washington, Aug 20 US President Donald Trump wished his former chief strategist Steve Bannon well upon his return to the far-right Breitbart News website, tweeting "Fake News needs the competition", the media reported.

Bannon will be a "tough and smart new voice @BreitbartNews ... maybe even better than ever before", CNN quoted Trump's tweets on Saturday.

On Friday, Bannon departed the White House after a turbulent seven-month tenure. Upon stepping down from his position, Bannon vowed to "go to war" with President Trump's opponents in the media and on the Capitol Hill.

Just hours after his ouster, Breitbart News announced that Bannon was back as executive chairman of the ultra-conservative website. The former adviser left Breitbart in 2016 to join Trump's presidential campaign.

Trump's tweet on Bannon was the second he posted on Saturday about his former chief strategist.

Earlier in the day, the President tweeted: "I want to thank Steve Bannon for his service. He came to the campaign during my run against Crooked Hillary Clinton - it was great! Thanks S."

Sources told told CNN that Bannon's ouster had been in the works for two weeks, and a source said that while he was given the option to resign, the former chief strategist was ultimately forced out.

Breitbart Editor-in-Chief Alex Marlow welcomed Bannon back in a statement, saying that the website had "gained an executive chairman with his finger on the pulse of the Trump agenda".

However, the mood inside Breitbart was mixed.

One person familiar with the matter told CNN that there was a contingent of Breitbart staffers who desperately wanted Bannon to return.

But others had hoped Bannon would not return, another source said, citing the brash and bombastic manner in which he worked with employees.

Bannon is the latest high-profile figure to be removed from the White House team after the ouster of Communications Director Anthony Scaramucci, Chief of Staff Reince Priebus, Press Secretary Sean Spicer and National Security Adviser Michael Flynn.

Fake news needs the competition: Trump to Bannon