The 24-year-old sailed through a marathon medical and contract negotiations last night on Tyneside.
He was accompanied on his visit to the club by his agent, Saif Rubie, who also doubles as the representative of Black Stars coach Avram Grant.
Rubie in a post on micro-blogging website Twiiter comfirmed the impending announcement by Newcastle .
Atsu has put pent to paper on a season-long loan deal with a view to a permanent switch to Rafael Benitez side at the end of the season.
Chelsea offered him to several clubs including Torino, Cagliari and FC Luzern after he was deemed surplus to requirements by Antonio Conte.
The serial loanee when the deal is announced will have joined his fifth club since signing for Chelsea in a £3.5 million deal from Porto in 2013.
He has been farmed out to Vitesse, Malaga, Bournemouth and Everton during his three years in london without making a competitive appearance.
He will join his international teammates at the Black Stars on Thursday after the Newcastle announcement.