David Moyes' short time as Manchester United manager could end as early as Tuesday morning.
Sky sources understand United's owners are ready to sack the Scot today, less than a season into the six-year deal he signed last summer.
No one at Old Trafford would comment on Monday as reports of Moyes' imminent departure spread throughout the afternoon, but bookmakers suspended betting on his future.
Sir Alex Ferguson's successor has overseen a slump from Premier League champions to seventh in the table, and United will not play Champions League football next season.
United are also guaranteed their lowest points total in the Premier League era, and Sunday's comprehensive defeat at Everton - the team Moyes left for Old Trafford - now looks like a final humiliation.
Moyes has taken just six points from 12 games against the six teams above United in the table but has consistently appeared confident he would be given time to reshape the club's playing squad.
To date the big-money signings of Marouane Fellaini and Juan Mata are the manager's only significant purchases, but the task of spending a summer transfer fund reported to be in the region of £150m could now fall to his successor.
Speaking on Monday Night Football, United great Gary Neville admitted it does not look good for Moyes after 24 hours of "repulsive" rumours.
He said: "When these explosions happen and all the media outlets go wild usually it ends up inevitably in a manager getting sacked.
"I have to say Manchester United as a football club do not normally comment on anything but they are going to have to clarify this position quickly because this afternoon has been strange.
"I find it repulsive the way in which these rumours break. I don't like it and I'll never get used to it even though I suppose it's the world which we live in."
Neville argued Moyes should be given more time to make a mark at Old Trafford, a policy which paid rich dividends with Ferguson.
English football's most successful manager went three seasons without winning a trophy before leading United to 13 Premier League titles and two European Cups.
Neville said: "Alex Ferguson himself got time in the early years when it was difficult for him. So I genuinely believe that when you give a man a six-year contract he deserves the opportunity and the time both professionally and out of respect.
"I've always felt Manchester United should be different and hold themselves up as a club that stands against what is happening in the game.
"I don't like it when professional people come out with statements that a manager should be sacked. It's not something that you'll ever hear from me because it's a difficult job and something that I've never done."
Sky Bet have already made Dutchman Louis van Gaal 3/1 favourite to take over at Old Trafford with Dortmund boss Jurgen Klopp at 4/1. Ryan Giggs - tipped to take charge until the end of the season should Moyes go - is 11/2 to get the job permanently.
Does David Moyes deserve more time at Man Utd?