Manchester United's Champions League Return: Left-back Dilemma and Defensive Reshuffle
Manchester United step back under the Champions League lights tonight, but a familiar problem is already looming over Michael Carrick’s preparations.
Three years after their last appearance in the competition – a limp group-stage exit in 2023 that capped a miserable 2023/24 campaign under Erik ten Hag – United return with a new coach, a new format and, potentially, the same old frailties.
This time there is no group. United are dropped into a 36-team league phase, and if they finish anywhere near the bottom, something will have gone badly, visibly wrong.
Left-back dilemma returns to haunt United
The warning signs are there. United spent the summer patching holes across the squad, but never truly nailed down cover at left-back. Tonight, away to Sabah FK, that decision could bite.
Luke Shaw did not train on Thursday. Carrick insisted there were no injury issues and that it was simply a rest day, but with the Manchester derby looming this weekend, the chances of Shaw being risked in Azerbaijan are slim at best.
That leaves United scrambling.
Harry Amass trained on Wednesday, yet throwing a teenager into a Champions League return would be a huge gamble. Patrick Dorgu offers energy and thrust, but Carrick is more likely to use him higher up the pitch. So the most logical solution is a compromise: Noussair Mazraoui, a right-back by trade, sliding across to the left to plug the gap.
It’s exactly the kind of makeshift fix that top-level sides try to avoid. United may have no choice.
Defensive reshuffle on the cards
Behind that patched-up flank, Senne Lammens will start in goal, tasked with bringing some calm to a back line that has looked far too easy to play through.
On the right, Diogo Dalot is expected to keep his place. In the middle, Carrick has a big call to make. Lisandro Martinez has looked rusty in recent outings, short of sharpness and timing. With City waiting on Sunday, this feels like the moment to pull him out of the firing line.
Leny Yoro partnering Harry Maguire would send a clear message: United need solidity now, and they need to manage minutes smartly. Rest for Martinez, responsibility for Yoro. It’s a risk, but a calculated one.
Mainoo the anchor, Bruno the constant
The picture is clearer in midfield.
Kobbie Mainoo will start. That much is certain. The teenager has quickly become the heartbeat of United’s build-up, and Carrick is leaning on his composure in tight spaces.
Alongside him, Youri Tielemans is set to reprise his role as the experienced foil, offering passing range and control. Ahead of them, there is no debate. Bruno Fernandes remains the first name on the teamsheet, the captain and creative axis in the advanced midfield role.
Carrick’s structure is obvious: Mainoo to steady, Tielemans to connect, Fernandes to damage.
Sesko managed, Cunha to lead the line
Up front, the plan is more cautious.
Benjamin Sesko’s minutes are being tightly managed, and with the derby against City just days away, starting him tonight would be reckless. If he goes from the first whistle in Europe, his chances of leading the line on Sunday all but vanish.
So the responsibility falls to Matheus Cunha. He can spearhead the attack, with Bryan Mbeumo and Marcus Rashford offering pace and width in support. On paper, it’s a front three with enough movement and threat to trouble Sabah. On the pitch, it still has to click.
United arrive at this Champions League return with scars from their last outing in the competition and questions over their balance, especially on that exposed left side.
If the gamble at full-back backfires tonight, the cost might not just be three points in Europe – it could shape the mood and the momentum heading into the derby that waits just around the corner.




