Ruben Amorim has been in charge of Manchester United for a month and will be aware of the size of the job that lies ahead.

Amorim has implemented a new formation and United are developing a new style of play, but results have continued to be hit-and-miss, meaning a win is required on Boxing Day.

United were hammered 3-0 by Bournemouth in their final game before Christmas and supporters left Old Trafford believing the squad needed another major overhaul in the summer.

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Amorim inherited Erik ten Hag's squad - the Dutchman spent more than £400million - and how that money has been wasted has been a prominent talking point during a dismal season.

So here are the 15 players signed by Ten Hag on permanent deals....

Tyrell Malacia

Signed for: €15m (£12.9m), with a potential €2million in further add-ons.

Verdict: Malacia briefly won Luke Shaw's starting role on the left side of the defence in his first season. He made 39 appearances in that campaign but picked up a knee injury, which required surgery.

His first operation didn't go as planned and he required another round of knee surgery. It was great to see him return last month but he's looked below the level required.

Christian Eriksen

Signed for: Free transfer

Verdict: Eriksen was brilliant in the first half of the 2022/23 season, starting alongside Bruno Fernandes and Casemiro in midfield and helping Ten Hag oversee a turnaround after a poor start.

The Dane was a peripheral figure in his second campaign although he enjoyed an unlikely renaissance during Ten Hag's final weeks in charge. Amorim has hardly used the midfielder.

Lisandro Martinez

Signed for: €57.3m (£48.3m), with an additional €10m (£8.4m) in add-ons.

Verdict: A lot was made of Martinez's height when he signed from Ajax but it didn't take him long to silence the critics. He became a huge fan favourite in his debut season, but has since struggled with a few different injury concerns and is short of form in this campaign.

Casemiro

Signed for: €71.8m (£60m), with an additional €11.9 (£10m) in add-ons.

Verdict: Casemiro was outstanding in his first year, helping United win the Carabao Cup and qualify for the Champions League. But his second season was absolutely disastrous.

Many thought there was no way back when he was hooked after 45 minutes against Liverpool in September. But he has responded, albeit his minutes have been reduced following the appointment of Amorim.

Antony

Signed for: €100m (£83.5m), with an additional €2.9 (£2.5m) in add-ons.

Verdict: Ten Hag pushed hard to sign Antony, who he worked with at Ajax, and United agreed to a deal despite the Dutch club's valuation increasing throughout the window.

Antony contributed just one goal and one assist in the 2023/24 Premier League campaign. He's been an awful transfer and will likely be sold in the summer.

Mason Mount

Signed for: £55m, plus £5m in add-ons.

Verdict: Mount was always available for selection during his time at Chelsea but has suffered several injuries at United which have stopped him from making an impression.

Jonny Evans

Signed for: Free transfer

Verdict: What is there left to say about Evans? He wasn't supposed to sign for United but everybody is glad he did. The veteran defender enjoyed a terrific campaign after his return to the club and can always be relied on when he's called into the starting team.

Andre Onana

Signed for: €51m (£43.8m), with an additional €4m (£3.4m) in add-ons.

Verdict: Onana has spoken honestly about his bad start and he improved last winter. He has made some wonderful stops this season - his double save against Fenerbahce was special - and seemed to have eradicated mistakes from his game - but he's had a few wobbles in the last month.

Rasmus Hojlund

Signed for: €76.5m (£64m), with an additional €9.5m (£8m) in add-ons.

Verdict: Hojlund scored 16 goals in all competitions in his first season. United believed he could become of the best strikers in the world but it was clear he was not the finished article.

Hojlund is just 21 years old and having the responsibility of leading the line at that age isn't really fair. He possesses all the qualities to be a long-term success but is still raw.

Altay Bayindir

Signed for: €5.1m (£4.3m)

Verdict: Bayindir has played just a handful of times since signing. He started in each Carabao Cup fixture this term but hasn't looked like a convincing goalkeeper.

Joshua Zirkzee

Signed for: €42.5m (£36.5m)

Verdict: While Zirkzee was signed to lighten the burden of scoring goals on Hojlund's shoulders, he hasn't looked like a natural goalscorer and is more suited to linking play in deeper areas.

He scored on his debut against Fulham with a superb finish at the Stretford End but has only managed to score twice more.

Leny Yoro

Signed for: €62m (£51.8m), with an additional €8m (£6.6) in add-ons.

Verdict: Yoro arrived with a huge reputation and looks an exceptional prospect but fractured his metatarsal on the pre-season tour and is yet to really get going in Manchester.

Noussair Mazraoui

Signed for: €15m (£12.8m), with an additional €5m (£4.2m) in add-ons.

Verdict: Mazraoui is one of the best signings on this list. He's made a brilliant start to his time at United after signing from Bayern Munich in August and seems like a bargain purchase.

Matthijs de Ligt

Signed for: €45m (£38.4m), with an additional €5m (£4.2m) in add-ons.

Verdict: Although De Ligt had a shaky start, he gradually improved and is a regular under Amorim.

Manuel Ugarte

Signed for: €50m (£42.3m), with an additional €10m (£8.5m) in add-ons.

Verdict: Ugarte enjoyed the best spell of his career with Amorim at Sporting Lisbon and he's started to show his quality in the last few weeks, which was needed after a mixed start.