Manchester United supporters laid into two players after a dismal 3-0 defeat to Liverpool on Sunday.
United were looking to bounce back after the last-gasp loss to Brighton last week but were soundly beaten in Arne Slot's first visit to Old Trafford.
Luis Diaz struck twice in the first half from two superb pick-outs from Mo Salah, who then got his customary goal against United in the second half.
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Despite changes in the summer, United are still suffering from the very same issues under Erik ten Hag and some supporters are already losing patience two games in.
Midfielder Casemiro was at fault for the first two goals after giving the ball away in key areas before being ultimately punished.
He was hooked for 20-year-old Toby Collyer at half-time and new signing Manuel Ugarte will almost definitely replace him permanently.
The Brazilian received pelters for a hapless display but fans also fumed at Marcus Rashford, who again offered little and looks a shadow of the player who scored 30 goals in Ten Hag's first season.
Rashford, who was the subject of a brutal put-down from Jamie Carragher pre-match, prompted groans from the stands after turning and playing the ball backwards when in a promising position.
The decision to take off Alejandro Garnacho instead of him for Amad Diallo in the second half, was met with loud boos.
One supporter wrote: "Casemiro with one of his worst ever performances of his entire career.
Another said: "Like this tweet if Casemiro should retire today."
A third fumed: "Not trying to single him out, I promise, but Rashford is Jogging, capital J, out of possession, and it's a big problem every game."
A fourth user vented: "Rashford is so washed… he takes every ball backwards."
A fifth added: "It’s like Rashford suddenly allergic to taking on players."
A final person opined: "ETH is putting his job at risk for Rashford and Casemiro."
Topics: Erik Ten Hag, Liverpool, Manchester United, Fan Reactions
Josh Lawless