Jamie Carragher has claimed Ruben Amorim changing system at Manchester United could put his job under threat. It has been a miserable season for United, who sacked Erik ten Hag in October and replaced him with Amorim after the 40-year-old had impressed in the Sporting dugout. However, Amorim has been unable to oversee a turnaround in United’s fortunes, with the club sitting 14th in the table and only three points ahead of West Ham in 17th. A 4-1 defeat to Newcastle was the 14th time United have been beaten in the Premier League this season, and their campaign now rests entirely on a Europa League quarter-final tie against Lyon. Asked who is to blame for United’s struggles, Carragher said: “I think Amorim is probably at the end of that queue if you like. You’d have to look at the ownership and the players there. He’s going into a really difficult situation. “We have to remember he didn’t want to take the job right away. He wanted to come in the summer. In a pre-season, but the results that he’s got they’re still not good enough. “We know for Man United, we’re not expecting them to win every week, we know they’re not a top team, but they shouldn’t be where they are in the league table, even with the players that they’ve got.” Amorim has stayed loyal to the back-three system that brought him success in Portugal, with Patrick Dorgu signed in January to provide some added strength at wing-back. United’s forward players have largely struggled to deliver in that shape, though, and it has raised questions over whether Amorim needs to be more flexible, at least until the summer when he has a transfer window and a full pre-season. Carragher has insisted that would be a mistake, believing it would defeat the point of United bringing Amorim to the club. “It took a bit of time, obviously, for the system,” Carragher said. “People are still yet to be convinced by that, is that the right decision? “Not actually from him, by the club for employing him because he came with that system, that’s his DNA. People keep saying, ‘oh, he’s got to change the system.’ “I don’t really see it like that because his whole managerial career and the success that he’s had has been based on that system, that’s what he knows. If he goes to something else, they might as well change the manager.”