Newcastle responded by stating that they would not sell Isak this summer, as the conditions for a sale had not been met. The club left the door open for Isak's potential return, saying that he remains part of the family and will be welcomed back when he is ready.
Reports suggest that Liverpool had a £120 million bid for Isak rejected earlier in the window, and the striker is now keen to join the Premier League champions. But what happens next?
Newcastle has been clear about what needs to happen for a deal to be done: a £150 million bid from Liverpool would be accepted. If that happens, the drama surrounding Isak's future would come to an end.
However, Liverpool are understood to be reluctant to make another bid for Isak, knowing that his behavior doesn't guarantee a deal. The Reds have been here before with players like Luis Suarez and Philippe Coutinho, who didn't get the moves they wanted at the time.
Isak's statement hinted at "broken promises," but he didn't elaborate further. It's been suggested that a new contract was promised in 2024, which ultimately fell through due to the club's issues with PSR and their decision to ensure such problems never arise again.
Newcastle has offered Isak several deals since he started agitating for a move, but the striker continues to turn them down. The club insists that no commitment has ever been made by a club official that he can leave the club this summer.
Newcastle has had a nightmare summer, with several moves for new strikers falling through. They had targeted Joao Pedro of Brighton, but he ended up joining Chelsea. They then turned their attention to Benjamin Sesko, but the giant Slovenian ended up at Manchester United.
Yoane Wissa is now the new number one target, but Brentford are reluctant to sell, having already lost several key players. Wissa has allegedly gone on strike to push through a move to Newcastle, but it remains to be seen if that will happen.
Isak's behavior has affected his teammates, who have been driven by the narrative surrounding his situation. Speaking after their draw with Aston Villa, Anthony Gordon and Dan Burn mentioned their "team spirit" and "togetherness." But it's clear that Isak's departure would be a significant blow to the team.
With just eleven days remaining in the summer transfer window, it's looking increasingly unlikely that Newcastle's "conditions" will be met. Isak will probably have to eat some humble pie and remain at St James' Park for the season. What happens next summer? Well, that's a completely different story.