Manchester City fans are to stage a march on Saturday outside the City of Manchester Stadium in support of manager Sven-Goran Eriksson.
The former England boss looks on his way out after one season in charge - and could be on his way to Benfica - as owner Thaksin Shinawatra is dismayed at the club's progress.
However numerous City supporters groups are alarmed at the situation and want Eriksson to stay.
A petition with around 14,000 signatures on it will be handed in to the club, according to 'King of the Kippax' fanzine editor Dave Wallace.
He said: "This is not anti-Thaksin, it is pro-Sven and will be a peaceful protest.
"Whether it will make any difference I do not know but at least the fans will be able to register their feelings and let the owner know they are not happy."