Manchester United are on red alert for a potential protest from supporters ahead of next Sunday's game at home to Liverpool.
Ahead of the corresponding fixture last season United fans broke into Old Trafford, which led to the game being postponed.
As reported by the Daily Star, United are fearful of a repeat of the shocking scenes, with some United fans having used social media to raise awareness of a planned protest.
Manchester United are concerned about a potential protest from supporters next weekend
United want to avoid a repeat of the scenes in May when angry fans clashed with police
Before the game in May some fans broke onto the pitch, with others being arrested after clashing with police, while United players were prevented from leaving for the game after fans prevented them from leaving the Lowry Hotel.