As they take on the Italian side in the quarter finals, supporters will protest a raising of ticket prices.
In a statement, Spion Kop 1906 said: "We are disappointed in the Football Club's decision towards ticket prices for 24/25.
In response, there will be no flags on The Kop for Thursday night's game. Unlike the Club's own approach, this has been agreed in consultation with other fan groups
"We will pay our respects to the 97 with Hillsborough flags only at this weekend's league match, as always with it being the closest game to the 15th of April.
"There is still a chance for the Club to hold some positive dialogue with the Supporters Board in time for Saturday's meeting. Until then the supporters have one message: NO TO TICKET PRICE INCREASES."