Ruben Amorim has four major dilemmas to fix in his Man Utd XI before Arsenal clash

Manchester United will embark on their latest Premier League campaign this Sunday when title challengers Arsenal visit Old Trafford. Ruben Amorim has strengthened his attack ahead of the new season, and there is universal optimism that United will be a much-improved side from last term.

However, there are still multiple problem areas Amorim must address in his team. Otherwise, there is a glaring ceiling on the progress United can make across the next 10 months. Express Sport picks out four major dilemmas the Portuguese head coach faces before the daunting arrival of Arsenal this weekend.

Goalkeeper uncertainty

Andre Onana is expected to beat his race for fitness and start for United against the Gunners, but the Cameroonian has not played at all in pre-season.

He has already lost the faith of many supporters due to his continued errors last term. The prospect of Onana stepping between the sticks on such a big occasion without match practice is leaving many uneasy.

Amorim must decide whether he trusts his No. 24 or will offer Altay Bayindir the opportunity to stake his claim at the start of the campaign.

In truth, United's attempt to sign Aston Villa goalkeeper Emi Martinez on loan earlier this summer says it all about the confidence in either option.

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The defensive general

For all the transfer speculation buzzing around Old Trafford this summer, there has been little talk about Amorim's defence for a reason.

He has an abundance of options for his back three, including full-backs-turned-wide centre-backs Luke Shaw and Noussair Mazraoui.

Amorim has a headache when deciding who will stand at the heart of his strongest back three between Matthijs de Ligt and Harry Maguire.

Neither possesses the required pace to work on the outside, so there will be healthy competition between the two throughout the campaign.

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Bruno Fernandes' partner

There is no sugarcoating it, United desperately need an athletic midfield to partner Bruno Fernandes if Amorim's 3-4-3 system is to work in the Premier League.

Casemiro turns 34 this season, while Manuel Ugarte is yet to convince with his performances since arriving from Paris Saint-Germain.

Kobbie Mainoo is considered more of an advanced option and will likely be used as one of Amorim's '10s' in the rare instances where Fernandes rests.

Casemiro or Ugarte will partner Fernandes against Arsenal, but Amorim faces scepticism regardless of the route he takes.

Amad's role

Amad heavily featured as United's right-wing-back throughout pre-season and looks set to receive most of his minutes in the role this term.

With Bryan Mbeumo, Matheus Cunha and Benjamin Sesko as this summer's signings, opportunities as one of Amorim's three forwards could be hard to come by.

But against a possession-hungry team like Arsenal, Amorim may require more defensive cover out wide rather than the added attacking threat that Amad provides.

Therefore, the United boss faces a big decision whether to name Amad on the bench against the Gunners and start Diogo Dalot at right-wing-back.