Brewster, the 20-year-old forward, has been linked with a number of Premier League clubs this summer, including Sheffield United and Palace.
And reports on Monday claimed the Eagles were winning the race to sign him - with Sky Sports saying a formal bid of £19million plus £6m in add-ons had been submitted by Palace.
This report was swiftly refuted by chairman Parish, who asked for the 'total fabrication' of a story to be taken down.
He said: "We have asked Sky to take this down as it is a total fabrication from start to finish.
"We have not made a bid, formal or informal."
We have asked Sky to take this down
as it is a total fabrication from start to finish.
We have not made a bid formal or informal. https://t.co/uIusuAsDcW
— Steve Parish (@CEO4TAG) September 21, 2020
The story was eventually changed to remove references to the formal bid, though Sky still reported on Palace's interest and claimed they are 'prepared' to pay £19m plus £6m in add-ons for Brewster.
A Sky Sports News post on Twitter apologised for the errors in their previous story, reading: "In a previous version of this story, Sky Sports News incorrectly reported Crystal Palace had made a formal bid."
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But Parish found the updated story just as disagreeable and wrote a new Twitter post to hit out at Sky Sports once again.
"Since you won't leave it alone nor will I," he began. "How do you know what I'm 'prepared to pay!' Or indeed if I'm prepared to pay anything?
"I can assure you numbers have never been discussed with me so who tells you this stuff and for what reason.
"And why is it ok to just write it?"
Since you won't leave it alone nor will I..
How do you know what I'm 'prepared to pay!' Or indeed if I'm prepared to pay anything?
I can assure you numbers have never been discussed with me so who tells you this stuff and for what reason