Images released by the Magpies pictured the likes of Matt Targett - a £15million permanent signing from Aston Villa - Allan Saint-Maximin, Callum Wilson, Dan Burn and Joelinton returning.
However, there were a number of players missing, the majority of which are set to link up with the group on Wednesday - as revealed by Eddie Howe - after their international involvement in June.
Howe told NUFCTV: “We plan to get them back in on Wednesday.
“I gave them extended time off due to their exertions in the summer. We look forward to seeing them.”
There were, however, some players not spotted in images released by the club, despite being overlookeinternational duty last month.
We pick out 14 players not pictured on the first day of pre-season:
5. Kieran Trippier
Trippier got some much-needed game time with England after a spell on the sidelines with a broken metatarsal. Photo: Stu Forster
6. Elliot Anderson
Anderson was called up to the Scotland u21s squad for their June fixtures after his League Two promotion heroics with Bristol Rovers. | Getty Images
7. Javier Manquillo
Manquillo, who missed the end of last season with chickenpox, was not pictured in images posted by the club. Photo: Laurence Griffiths
8. Fabian Schar
Schar has enjoyed extra time off after being called up for Switzerland for their June fixtures. Photo: Ian MacNicol