Despite interest from Liverpool and Barcelona, Newcastle hopes that a significant salary increase will convince Isak to remain with the team.
Currently, Isak earns £150,000-a-week, but Newcastle is willing to go beyond that figure to keep him.
Manager Eddie Howe has expressed his desire to keep the club's strongest players, stating that the team's ambition is to achieve long-term success.
Howe believes that keeping and attracting talented players is crucial to achieving the club's goals, and he is committed to making this happen.