Manchester United's transfer window closed without the left-back reinforcement many had expected the club to pursue, leaving manager Michael Carrick to rely on Luke Shaw and converted options as cover in that position for the coming season.
The need for competition at left-back had been apparent since the end of the 2025-26 campaign. Shaw, United's only recognised senior left-back, started all 38 Premier League matches last season despite a history of injury problems, an achievement widely regarded as remarkable given his fitness record. With backup Tyrell Malacia departing when his contract expired at the end of June, and doubts over whether the 31-year-old Shaw could withstand a campaign that may extend beyond 60 fixtures, United were expected to bring in additional support.
Several candidates were considered throughout the window, including Newcastle's Lewis Hall, Barcelona's Alejandro Balde and Racing Santander's Jorge Salinas. The club eventually turned their attention to Manchester City's Rayan Ait-Nouri, hoping to arrange a loan move, but City rejected the approach. Any deal would have required United to include an obligation to buy the player permanently at a later date, a condition the club was unwilling to accept given other priorities.
United are understood to hold Hall in high regard and would have completed a deal for the 22-year-old had circumstances allowed. However, with several Premier League clubs targeting Newcastle's key players this summer, any fee for Hall was expected to be substantial. Operating with a limited transfer budget, United instead prioritised strengthening their midfield, committing £70m to sign Carlos Baleba from Brighton, and decided Hall was a target worth revisiting next summer.
Other left-back options proved unworkable. Barcelona were only willing to sell Balde rather than loan him, while Salinas — despite a modest release clause — was expected to join Atletico Madrid instead. United's late interest in Argentine defender Nicolas Tagliafico also came to nothing.
As a result, Shaw remains first-choice left-back, with Noussair Mazraoui — who also plays the position for Morocco — as his primary understudy. Diogo Dalot, who has previously operated on the left, and academy product Harry Amass provide further depth, though Amass's long-term role remains unclear despite interest from other clubs during the window. The 19-year-old impressed during pre-season while shadowing Shaw, having previously spent time on loan at Sheffield Wednesday before an injury disrupted a switch to Norwich.
United's willingness to use Mazraoui at left-back has been reinforced by the emergence of Leny Yoro, signed from Lille for £52m in 2024 as a central defender but used mainly at right-back by Carrick during pre-season. Yoro replaced Dalot in that role during United's recent game against Ipswich, with Mazraoui coming on for Shaw in the same match. At 20, Yoro is still adapting to the position but has shown pace, strength and composure on the ball, drawing comparisons to Manchester City's Josko Gvardiol, who successfully transitioned from centre-back to full-back.
United's approach reflects a deliberate strategy to avoid repeating past mistakes, having previously signed players such as Alex Telles, Matteo Darmian and Sergio Reguilon as left-back cover, none of whom met the required standard. The club maintained a firm stance on valuations throughout the summer, refusing to overpay for reinforcements they did not consider essential.
Whether this approach proves successful will depend on results over the course of the season, with the January transfer window offering United a further opportunity to address the position if needed.
Based on reporting from BBC Sport.