Manchester United face a defining moment in their 2026/27 season this week — a UEFA Champions League opener against Azerbaijani side Sabah on Thursday, followed by the first Manchester derby of the campaign just three days later. Manager Michael Carrick must decide how heavily to rotate, and whether his squad is capable of carrying the weight.

Gary Neville sounded the alarm after United's 2-2 draw with Everton. "It puts a bit of pressure on United," he said. "They've got City next week and European games starting in midweek." With those two fixtures now here, his words feel more relevant than ever.

A squad imbalance hiding in plain sight

United were handed what statisticians considered the easiest opening six fixtures in the Premier League this season. Halfway through that run, they have dropped more points than they have collected — a troubling return that makes the coming days feel season-defining already.

According to Transfermarkt, United actually boast the second-largest squad in the Premier League by number of players. Yet size alone tells only part of the story. Their forward depth ranks highest across the division, but they drop to eighth in midfield and tenth in defensive options. Most alarmingly, they rank 18th in left-back cover — a position repeatedly flagged given Luke Shaw's persistent injury issues.

The responsibility for that particular gap sits firmly with the club. Only Everton and Liverpool have spent less on defensive reinforcements than Manchester United since 2022 — a remarkable figure given United's status as the division's highest net spender over the same period.

Substitutes failing to maintain standards

The gulf between United's preferred XI and the players who follow them off the bench was laid bare against Everton. Carrick made his first changes in the 70th minute, and the data from that point onward tells a clear story. United's territorial presence shifted further into the opposition half, yet the quality of their ball movement in the final third dropped, and the number of chances created fell sharply.

Simultaneously, their defensive engagement in duels decreased, inviting Everton — who were chasing the game — far too much space to threaten. Context matters, of course, but the pattern is not limited to that match. A similar trend emerged against Hull, where Carrick was forced to use fringe players early due to fitness concerns, and those substitutes nudged the team closer to what would become the settled XI for subsequent games.

The one clear exception is Benjamin Sesko, whose impact off the bench has stood out. But a single reliable impact substitute is not the same as genuine squad depth.

Opportunity knocks for the fringe players

Thursday's Champions League tie against Sabah is the moment for players such as Leny Yoro, Patrick Dorgu, Andrey Santos, and Joshua Zirkzee to stake their claim. Each of them will want to be involved in the derby, but the best way to earn that chance is to deliver in Europe first.

Neville noted that Carrick still needs to build trust with the Old Trafford faithful — and so do the squad members fighting for a place. A convincing European victory would ease some of the tension building around the club. Anything less, and the pressure on both Carrick and his wider group will only intensify heading into Sunday's showdown with Manchester City.