Isak, 25, is pushing for a move to Premier League champions Liverpool and is currently on strike at St James’ Park.
The Sweden international decided to skip the PFA awards at the Manchester Opera House on Tuesday evening, despite being named in the Team of the Year.
He has since released a statement on Instagram, suggesting that his relationship with Newcastle is completely broken due to ‘broken promises.’
Isak said: “I'm proud to be recognised by my fellow professionals with a place in the PFA Premier League Team of the Season for 2024/25.
“First and foremost I want to thank my teammates and everyone at Newcastle United who has supported me along the way.
“I'm not at the ceremony tonight. With everything going on, it didn't feel right to be there.
“I've kept quiet for a long time while others have spoken. That silence has allowed people to push their own version of events, even though they know it doesn't reflect what was really said and agreed behind closed doors.
“The reality is that promises were made and the club has known my position for a long time. To now act as if these issues are only emerging is misleading.
“When promises are broken and trust is lost, the relationship can't continue. That's where things are for me right now – and why change is in the best interests of everyone, not just myself”.