Roy Keane says Manchester United "look like a bunch of strangers" after they snatched an unconvincing 2-1 victory over Leicester in the FA Cup fourth round.
Harry Maguire headed in a 93rd-minute winner from an offside position which was allowed to stand due to VAR not being in operation.
Bobby De Cordova-Reid struck in the 42nd minute to give Leicester the lead which prompted boos from the Old Trafford crowd at half-time and it took United 65 minutes to have their first shot on target.
Sky Sports pundit Keane, speaking on ITV, said: "United got out of jail.
"Don't be fooled by it. You have to praise them - Manchester United are in the next round of the cup - but if they keep performing like that...the performance itself was nowhere near good enough.
"The subs made a difference. They played a lot more direct and more forward passes but they should do more. They rode their luck."
Keane slammed United at half-time, saying: "It's shocking. Really, really poor. No shot on target. They had two on target against Crystal Palace. They're actually boring now.
"You're looking for urgency and energy. The goal sums up United. Giving it away cheaply, people not staying with their runners.
"From United's point of view, is this what it's come to? Nowhere near good enough.
"United aren't even doing the basics right. They're sloppy."
Keane added afterwards: "The manager is obviously really frustrated with the performance. He mentioned about having no energy, that's the bit I don't understand.
"Whatever about the tactics and players trying to settle in and lack of confidence but you've got to play with energy.
"Your starting point has to be energy and enthusiasm and then you take it from there. If you've got no energy, it doesn't matter what system you're playing, you won't get near anybody.
"It's all well and good playing in possession but you have to close people down. Leicester were getting plenty of joy.
"We've seen two bad teams there tonight. Any team with a bit more quality than Leicester would have got the job done. United rode their luck."
Amorim: Good result, not a good performance
Manchester United head coach Ruben Amorim speaking on ITV:
"We have to believe it until the end, but this time has nothing to do with the time of Fergie.
"I think the performance...we have to do so much better with the ball, without the ball. We didn't have any energy in the beginning, especially in the first half.
"Then in the second half, we played a little bit better, with a little bit more speed, winning second balls and then we managed to turn things around.
"It was a good result, not a good performance.
"I cannot focus just on saving the season or the momentum with a cup. It's not the way I see football, it's not the way I see Manchester United.
"I'm not thinking about the end of the season because the final is at the end of the season. I don't care about that, I care about the moment and the moment is not good enough.
"A good result. We move forward to the next stage. We have a week to prepare, but today was not a good day."
muhceilrst
0
Maguire is a neutral defender ,he can score anywhere provided it's a goal
zutbklnsuy
1
Amorin should stop experimenting, players already coping with new system & are playing out of position. Bruno should not play deep, as he is the playmaker & najes things happen. Both Mainoo & Dalot should be rested for next game. Too much focus on Mainoo contract have made him some extra special, but the outcome is he is an ordinary player. There are plenty of players like him in PL & Championship. Collyer is much better with the ball at his feet & defending. pkay Dorgu on left & Amad on right wing back.
kabceoz
1
Robbed by referee and VAR
haediknstz
0
Amori is getting worst by day
zecdlmop
1
yeah we have forgotten Fergie era longtime but the coach have to forget using 3defenders and his approach is not working on the players,how many talents he had in mutd but they are all not good to the coach but once they leave they are good somewhere else ,even Rud won with the same players the coach never wanted so the coach should change from the presents formation and pattern of play to get the best out of this good players you have
Ciylmnos
2
Onana should be benched MU WILL BE STRONG WITHOUT HIM
Liubcdotuz
0
Something very wrong at Man UTD since Ferguson left. Amorin looks even worse than all previous coaches who came before him
you are right, Amorim is the worst coach in man united history
Yeobdeiopr
1
Something very wrong at Man UTD since Ferguson left. Amorin looks even worse than all previous coaches who came before him
noaikory
0
Ma brad u mst change t be honest this is England u mst use four difender please
Wueailnprz
1
gh
Niccdortu
0
Yeah forget Fergie time.