I have warned Pep Guardiola about that particular player, he refused to bench him, He keeps causing problems to the team, He cost Manchester City three points and Pep played him full time: Former Man City Player and Argentina international Kun Aguero names ONE player who doesn’t deserve to start for Kan City, warned Guardiola about the unforgivable mistake. THAT PLAYER DOESN’T DESERVE TO START, HONESTLY… He needs to learn manners

The atmosphere around Manchester City had been tense for weeks, but what happened on that night took things to a completely different level. The fans walked into the Etihad Stadium expecting another dominant European performance, the kind they had become used to under Pep Guardiola, a man who had built a reputation for perfection, control, and tactical brilliance. Instead, what they witnessed was confusion, frustration, and a performance that raised serious questions about decisions both on and off the pitch.

Before the match, the big talking point was already swirling around one man — Erling Haaland. The powerful striker had been in the spotlight after being substituted at half-time in a previous game against Fulham. Guardiola later revealed the reason in a calm but slightly concerning tone: Haaland himself had said he didn’t feel comfortable continuing. That statement alone sent shockwaves through fans. Was it injury? Was it fatigue? Or was there something deeper going on behind the scenes?

Guardiola, known for protecting his players publicly, did not go into too much detail, but his words carried weight. When a player like Haaland, known for his strength, hunger, and relentless energy, admits discomfort, it raises eyebrows. Many fans began to wonder if the team was beginning to feel the pressure of a long season, or if internal issues were starting to surface.

Still, despite all the questions, City fans expected a reaction. They expected their team to bounce back strongly in the Champions League. Instead, they got one of the most disappointing performances in recent memory.

From the very first whistle, Bayer Leverkusen looked sharper, faster, and more organized. City, on the other hand, looked like a group of players who had never played together. The rhythm was missing. The understanding was not there. Passes went astray, movements were mistimed, and the usual confidence that defined Guardiola’s team was nowhere to be seen.

One of the biggest reasons for this chaos was Guardiola’s decision to rotate the squad heavily. Ten changes. Ten. It was a bold move, one that could either show the depth of the squad or completely destroy the team’s balance. Unfortunately for City, it turned out to be the latter.

Players who had not played regularly were suddenly thrown into a high-pressure European game. The chemistry just wasn’t there. You could see it in the way they moved, the way they hesitated, and the way they struggled to build any meaningful attacks.

At the back, things were even worse. The defensive line looked nervous, unsure, and completely unprepared for the movement of Leverkusen’s attackers. When Alejandro Grimaldo found the net for the opening goal, it did not come as a surprise. It was coming. You could feel it.

The goal itself was a result of poor positioning, lack of communication, and slow reactions. City defenders were caught flat-footed, and Grimaldo punished them with precision. The Etihad crowd fell silent. This was not the City they knew.

Guardiola stood on the touchline, arms folded, watching carefully. You could tell he was already thinking about changes. And at half-time, he acted. Three substitutions. A clear sign that he knew things were not working.

But instead of improving the situation, the changes seemed to make things worse.

Leverkusen grew stronger, more confident. They sensed weakness, and they attacked it without mercy. When Patrik Schick scored the second goal, it felt like the final blow. The game was slipping away, and City had no answers.

The introduction of Haaland later in the game brought a brief moment of hope. Fans cheered, expecting their star striker to rescue something from the match. But even he looked off. When he was played through one-on-one, a situation he usually converts without thinking, he missed. That moment summed up the entire night.

It was not just about tactics. It was not just about rotation. Something deeper was wrong.

After the match, the analysis began, and one voice stood out — Sergio Agüero. A man who knows Manchester City better than most. A club legend. A hero. And someone who does not speak lightly.

Aguero did not hold back.

He revealed that he had warned Guardiola about a particular player. According to him, this player had been causing problems for the team for some time. He went further to say that the same player cost City three points in a previous match, yet Guardiola continued to trust him and played him for the full ninety minutes.

That statement hit hard.

Fans immediately began speculating. Who was the player? What exactly was the problem? Was it poor form? Lack of effort? Or something happening behind the scenes?

Aguero’s words carried weight because he understands what it takes to succeed at the highest level. He knows the standards at Manchester City. For him to publicly question a player’s place in the starting lineup was a serious matter.

The criticism also indirectly put pressure on Guardiola. The Spanish manager is known for his loyalty to certain players, sometimes sticking with them even when they are struggling. It is part of his philosophy — trust, belief, and patience. But sometimes, that patience can cost results.

And on this night, it seemed like it did.

Looking at the individual performances, it was clear that many players were below their best. The goalkeeper did not make any major mistakes, but he also did not inspire confidence. The defenders struggled with positioning and decision-making. The midfield lacked control and creativity. And the attack, even with all its talent, looked blunt.

There were small positives here and there. John Stones tried to hold things together at the back. Phil Foden showed flashes of quality when he came on. Jeremy Doku looked dangerous at times. But overall, it was not enough.

Not even close.

The bigger concern, however, is what this result means for the future. Manchester City are not used to being outplayed like this, especially at home. The Etihad used to be a fortress, especially in the Champions League group stage. But that record is now broken.

And once a record is broken, doubts begin to grow.

For Guardiola, this is a moment of reflection. His decisions will be questioned. His tactics will be analyzed. And his trust in certain players will come under scrutiny.

For Haaland, there are also questions. Is he fully fit? Is he mentally sharp? Or is he going through a difficult period? His admission about not feeling comfortable earlier now feels more significant.

For the team as a whole, this is a wake-up call.

Football is not just about talent. It is about balance, chemistry, and making the right decisions at the right time. On this night, City got almost everything wrong.

The fans will be hoping for a response. A strong one. Because this team has the quality to bounce back. They have done it before, and they can do it again.

But one thing is clear — changes may be needed.

Whether it is in team selection, tactics, or even attitude, something has to shift. Because performances like this are not acceptable at a club like Manchester City.

And with voices like Aguero speaking out, the pressure is only going to increase.

The next few games will be crucial. Not just for results, but for restoring belief. Because once belief starts to fade, even the best teams can fall apart.

For now, the questions remain unanswered.

Why was Haaland really subbed?
Who is the player Aguero was talking about?
And most importantly, can Guardiola fix this before it becomes a bigger problem?

Only time will tell.