Newcastle forward Allan Saint-Maximin was missing from the party which headed to Glasgow for Tuesday's friendly against Rangers amid speculation he could leave the club.
Newcastle chairman Yasir Al-Rumayyan says the club are now aiming to be "number one" after their transformation from relegation strugglers to Champions League participants.
Newcastle are on the verge of signing AC Milan and Italy midfielder Sandro Tonali, according to reports.
Eddie Howe has admitted Newcastle have "massively over-achieved" this season and will have to spend big in the summer if they are to match it next time around.
Nick Pope ensured Newcastle booked their Champions League place with a game to spare as he denied Leicester a priceless victory in their bid for Premier League survival.
Newcastle boss Eddie Howe is hoping the security breach which left him in danger at Elland Road could help prevent a future "tragedy" on a football pitch.