Roy Keane tore into the Glazer family's ownership of Manchester United as he warned "this is just the start" of fan protests over the way the club is run.
Sunday's Premier League match against Liverpool at Old Trafford was eventually called off after Man United fans turned en masse to demonstrate against the club's ownership. Several hundred ended up on the pitch, while the protests outside meant neither team bus made the trip to the stadium.
While expressing his disappointment that the game was - after initially being delayed - postponed to a future date, United legend Keane said he fully backed the supporters and said their actions showed they loved the club.
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"I think United fans have just had enough," Keane said on Sky Sports.
"They're doing it because they love the club and it's not what has happened over the last few weeks with the Super League, I think it's been building for a number of years now, that frustration, and they've come to the end and thought 'enough is enough'.
"It's been building up over the last few years - disappointment in communication, stuff going on in the backroom, tickets, whatever it might be. The leadership of the club has not been good enough, when they look at the owners and feel it's just about making money."
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Keane, who spent 13 trophy-filled years at United, nailed some of the issues that anger supporters.
Namely, a lack of direct communication, an increase in ticket prices and a feeling that the Glazer family just view the club as a cash cow. As has been pointed out by Keane's long-time teammate Gary Neville, Old Trafford is a stadium in need of repairs that the owners currently seem to show no interest in carrying out.
"The statement today is huge for the game to be called off," added Keane.
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"Sometimes you have to put a marker down for people to take notice and this will go all over the world now and people will have to sit up and take note.
"Hopefully the owners of Man United will say, 'These fans are deadly serious' - and there's more to come. This is just the start of it for United fans, I guarantee you.
"What happens at the next home game, is it the same? This is just the start for United fans and their plan is for the United owners to give in and sell the club."
While the aborted European Super League plan was undoubtedly the spark that caused Sunday's scenes, it was just a tipping point for the discontent that Manchester United's support has long felt toward their owners, ever since Malcolm Glazer first bought the club in 2005.
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Clearly Keane believes this weekend's protests were just the start of a prolonged campaign to rid United of their current owners.
All imagery: PA Images/Sky Sports
Topics: Manchester United, Premier League, Old Trafford, Glazer family, Roy Keane