Aston Villa fans are planning protests against manager Alex McLeish.
They believe last weekend's defeat at Newcastle was a 'debacle' and high-profile players Stephen Ireland and Charles N'Zogbia are now in revolt.
Ireland was involved in a bust-up with McLeish before being subbed at half-time and N'Zogbia later tweeted he was unhappy.
A statement on the Vital Villa fans' website read: "We need to act now before it is too late and the unthinkable happens. If you support this, join us at 3pm on Sunday."Supporters were furious McLeish was given the Villa job last summer after leaving rivals Birmingham.