Manchester United’s search for defensive reinforcement concluded without success as the summer transfer window shut, leaving Michael Carrick facing a shortage of natural left-back options heading into the campaign.
The Old Trafford club dedicated considerable resources to exploring potential additions for that flank, with their most unexpected avenue involving a approach to Manchester City regarding Rayan Ait-Nouri’s availability.
Their recruitment team, headed by Omar Berrada and Jason Wilcox, also pursued Lewis Hall before considering short-term alternatives such as Alejandro Balde and Ian Maatsen.
Ultimately, no suitable candidate emerged to strengthen the squad in that department.
Luke Shaw featured in every Premier League match last term, completing all 38 appearances, though the England international has encountered early-season difficulties and at 31 must demonstrate his durability across an increasingly demanding schedule.
Even with Shaw remaining available, Carrick cannot expect him to start every fixture, meaning alternative solutions must be identified.
Noussair Mazraoui represents the most viable option to step into that role.
The Moroccan operates primarily as a right-back for his club, providing cover for Diogo Dalot in that position, but has demonstrated his capability to play on the opposite flank for his national team, where Achraf Hakimi occupies the right side.
His performances at the World Cup in that secondary position were impressive.
At 28 years old, the former Ajax man has accumulated nine appearances for United down the left channel, alongside stints at centre-back, right-back and even in an advanced midfield role, indicating the adaptability required to fill the gap.
Dalot has recovered from a difficult beginning to last season to reclaim his place as the first-choice right-back, showing greater comfort operating in a traditional back four rather than as a wing-back.
His experience spans 34 matches at left-back for the club, in addition to 28 appearances in a wing-back capacity on that side under the previous regime.
While his preference remains playing on the right, he has proven capable of shifting across when required.
A limitation shared by both Dalot and Mazraoui involves their right-footedness, which would restrict the attacking width that a left-footed defender naturally provides.
Patrick Dorgu offers an offensive-minded alternative and could potentially operate from deep against lesser opposition, though deploying him in high-stakes Premier League or Champions League encounters would carry considerable risk.
United acquired him from Lecce specifically to feature as a left wing-back, yet opportunities in that role proved scarce following Ruben Amorim’s dismissal and Carrick’s decision to adopt a four-man defence.
Since that tactical shift, the Danish international has excelled in a more advanced left-wing position, with some analysts suggesting he may ultimately establish himself as a right-winger.
He made 57 Serie A appearances for Lecce and was fulfilling left-back duties in Italy when United made their approach in January 2025.
Harry Amass had anticipated departing during the off-season, yet a transfer never materialised.
Burnley submitted a formal offer of £3.5million in the final days of the window, though United declined the proposal.
Had the Clarets improved their valuation, the teenager might presently be at Turf Moor.
The club’s willingness to sanction a sale or loan indicates limited expectations for his involvement in the senior side this term.
He has yet to feature in a matchday squad and represented the Under-21s in Premier League 2 last week.
The upcoming Carabao Cup third-round encounter with Brighton at Old Trafford could present an opportunity for him to demonstrate his abilities.
Lisandro Martinez ranks among the first names on the team sheet when available, with his contribution to central defence evident in the victory over Ipswich, where his incisive passing regularly initiated attacking moves.
At 28 and left-footed, he possesses sufficient technical ability to transition to left-back, potentially with instructions to tuck inside centrally to continue offering quality distribution.
However, removing him from the centre of defence would create a significant void, making such a move improbable.
Carlos Baleba’s claim to consideration stems from his left-footedness.
The club’s major midfield acquisition of the summer cost £70million and was recruited to operate in the centre of the pitch.
While Carrick possesses five midfield options to select from, repositioning Baleba could become necessary in extremis, though he has never featured in that defensive role.
He did occasionally operate at centre-back during his Brighton career, providing some relevant experience.
Diego Leon has attracted discussion among sections of the support base, though the reality remains that the 19-year-old Paraguayan is deemed unready for first-team involvement and has not integrated with Carrick’s senior training group.
He has failed to make a Premier League 2 matchday squad this season, with the priority centred on developing him within the Under-21 setup rather than accelerating him into the senior environment.