Isak left the team's base in Newcastle and traveled to San Sebastian, Spain, to use the training facilities at his former club, Real Sociedad. He is being accompanied by a personal trainer, and is reportedly training without any issues. This is in contrast to earlier claims of a minor thigh injury.

A recent medical examination has given Isak a clean bill of health, contradicting Newcastle's initial assessment. The club has not denied reports that Isak's actions were taken without their permission. As a result, he is now facing disciplinary action.