Poyet is under huge pressure on Wearside after Saturday's 4-0 home defeat to Aston Villa, and The Telegraph are reporting that the Black Cats hierarchy have already decided to part ways with the Uruguayan this week.
With just nine games to play this season, Sunderland will need to make a quick appointment - and the bookmakers have already started pricing up odds for Poyet's successor before he's even left the Stadium of Light!
The bookmakers have already made ex-Rangers boss Advocaat the odds-on favourite to replace Poyet after a flurry of bets on Sunday evening.
Advocaat, 67, may be best known in Britain for winning two Scottish Premiership titles with Rangers in 1999 and 2000, or for even beating the Scots in the 2008 UEFA Cup Final with Zenit St. Petersburg.
Yet the Dutchman has had a long, extensive career in management. The full list of clubs managed by Advocaat is HFC Haarlem, SVV Schiedam, Dordrecht, the Netherlands, PSV Eindhoven, Rangers, the Netherlands again, Borussia Monchengladbach, the United Arab Emirates, South Korea, Zenit, Belgium, AZ Alkmaar, Russia, PSV Eindhoven again, AZ Alkmaar again and most recently, Serbia.
That's some list of clubs and countries, and Advocaat is a savvy, experienced manager who can boast a 54% win percentage over his career, with his taken him to virtually every corner of the globe so far.
If the bookmakers are to be believed, his next stop could be the Stadium of Light - and after four months out of management, Advocaat will need to hit the ground running should he return to Britain to manage Sunderland in the coming days.