The Uruguayan successfully guided the Black Cats to safety in his first season but has presided over just four Premier League wins this term
Earlier on Monday Goal reported that Black Cats sporting director Lee Congerton has already lined up a temporary replacement for Poyet as he attempts to halt the club’s slide towards the relegation zone.
Poyet took charge at the Stadium of Light in October 2013 following the sacking of Paolo Di Canio and succesfully guided the club to safety despite a disappointing start under the controversial Italian.
But Sunderland have failed to kick-on this term and have won just four Premier League matches, leaving them just one place and one point above the relegation zone.
Chairman Ellis Short said: “I would like to thank Gus for his endeavours during his time at the club, in particular last season’s ‘great escape’ and cup final appearance, which will live long in the memory of every Sunderland fan.
“Sadly, we have not made the progress that any of us had hoped for this season and we find ourselves battling, once again, at the wrong end of the table. We have therefore made the difficult decision that a change is needed.”
Poyet’s position became untenable on Saturday when fellow relegation strugglers Aston Villa scored four first-half goals at the Stadium of Light, prompting a torrent of abuse from the stands and thousands to leave the ground well before the final whistle.
The result leaves Sunderland languishing in 17th in the Premier League after 29 matches, just one point ahead of Burnley who recorded a surprise win over title-chasing Manchester City on Saturday.