Newcastle United legend Kevin Keegan will return to the club when Mike Ashley is no longer the owner.
Keegan famously fell out with Ashley after he resigned as manager in 2008.
The former England boss wrote: "They have made a toy out of Newcastle.
"As much as it pains me to say it, I have no desire to be associated with the place for as long as that continues.
"I will gladly return when they have gone.
"I look forward to the day when Newcastle is free of the man who has lurched from one bad decision to another, run an empire of self-harm and handed money and power to people who deserved neither.
"I don't want to share my oxygen with these people."