Man Utd have signed one of the Premier League’s best midfielders – there’s just one problem

Manchester United have completed their midfield overhaul this summer, but the final piece of the puzzle remains frustratingly out of reach. The club have now spent more than £150 million on three new midfielders—Andrey Santos, Youri Tielemans and Carlos Baleba—yet their left-back search has taken a fresh twist as the transfer window enters its final days. With Michael Carrick’s side still hunting for defensive cover, the question is no longer just about midfield balance, but whether the squad can be fully reshaped before the deadline.

Why United’s midfield rebuild still feels incomplete

The Red Devils have made their priorities clear this summer. After last year’s focus on rebuilding the attack, United have now turned their attention to the engine room, spending heavily to address years of midfield fragility. Carlos Baleba’s arrival from Brighton for up to £70 million—far below the £100 million-plus figure Brighton initially sought—highlights both United’s urgency and the risks involved. The Cameroon international’s 2025/26 season was underwhelming by his own standards, yet his defensive metrics remain impressive: 79 tackles in the Premier League last term, joint-25th in the division, and 14th for interceptions per 90 minutes according to Fotmob. Those numbers suggest a player capable of adding steel, but the drop-off from his standout 2024/25 campaign introduces an element of uncertainty.

Baleba joins Santos, who arrived from Chelsea for a reported £45 million, and Tielemans, signed from Aston Villa for around £40 million. The trio represent a clear attempt to restore control in midfield, a department that has been a persistent weakness under previous regimes. Yet even with this spending spree, United’s midfield picture is not yet settled. The club’s recent history shows that big-money signings do not always translate to immediate impact—as noted by the Guardian, the rebuild leaves Carrick with no excuses, but also no guarantees.

The left-back crisis deepens as deadline looms

While United have fortified their midfield, their left-back situation has deteriorated. Luke Shaw’s contract is in its final year, and manager Michael Carrick has reportedly viewed Patrick Dorgu more as a winger than a defensive option. The club’s initial targets—Lewis Hall and Alejandro Balde—have proven unattainable, with Newcastle insisting Hall is not for sale and Barcelona reluctant to part with Balde at a reasonable price. With the window closing, United are now considering a short-term fix, with reports suggesting they could follow the path of signing an experienced left-back on loan, much like Sergio Reguilon’s arrival from Tottenham in 2023.

Transfer expert Fabrizio Romano has hinted at a pragmatic solution, stating that United may settle for a player who can provide competition and international experience rather than a marquee name. The club have also been offered Chelsea’s Tosin Adarabioyo, a 28-year-old Manchester City academy graduate, as a potential defensive option. Whether Adarabioyo fits United’s long-term plans remains unclear, but in the short term, he could offer the stability they desperately need at the back.

The bigger picture: squad gaps and deadline-day manoeuvres

United’s transfer activity this summer has been defined by bold spending in midfield, but the left-back dilemma underscores a broader issue: even after major investment, certain positions remain exposed. The club’s defensive reshuffle has lagged behind their midfield rebuild, leaving Carrick with a squad that is still unbalanced. The addition of Baleba, Santos and Tielemans may solve their midfield problems, but without a reliable left-back, their defensive structure remains vulnerable.

Beyond defence, United’s deadline-day focus appears to be on securing at least one more deal before the window slams shut. Whether that comes in the form of a loan left-back or a permanent defensive signing like Adarabioyo, the club must act quickly. The contrast with other Premier League sides is stark—while Arsenal and Manchester City have been active in the market, United’s transfer business has been concentrated in one area, leaving other positions dangerously thin.

As the window ticks down, Carrick’s challenge is not just to complete his midfield revolution, but to ensure the squad is fully equipped for the challenges ahead. The spending spree suggests ambition, but ambition alone will not secure results. United need every part of the puzzle to fit—starting with a left-back who can provide the defensive solidity the club have lacked for years.

For now, the midfield rebuild is complete. The left-back question is still open—and with it, the final verdict on whether this summer has truly transformed Manchester United.