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The transfer fee paid for Mudryk was very high. I think that's the main reason for the criticism for him. If any team pays so much for the transfer of a football player, it is naturally expected that the transferred football player will carry the team up by himself. However, Mudryk is only 22 years old and very inexperienced in the Premier league. Also, as you mentioned, Chelsea is the worst Chelsea in recent years. It's not fair to expect Mudryk to change everything on his own. Another point I agree with you is that if Mudryk performs poorly again in the new season when things are going well, then no one will stand behind him. He has to make good use of the opportunity he will get this season.
Precisely because the team's performance was poor, the performance of almost all the players also didn't look optimal, I think not only Mudryk but all the Chelsea players, it's just that because Mudryk was a player who was brought in at an expensive price so the expectations for him were higher so he was in the spotlight.
I don't think he has failed, Mudryk is still very young and quality-wise this player is very good and there is still a big possibility for Mudryk to prove himself.
It is essential to approach player evaluations from a fair and impartial standpoint. Although team chemistry and morale can have an effect on individual performances, they are not the only factors that determine a player success or failure. The effectiveness of Mudryk should be assessed in light of a variety of elements such as his skill set adaptability and consistency. Mudryk will get the chance to demonstrate his skills in a fresh setting with the potential for Pochettino hiring to influence Chelsea playing style and mood. Football is a team sport, though so it is important to keep in mind that individual accomplishments are frequently entwined with team success. It would be inappropriate to make assumptions regarding Mudryk suitability for Chelsea based only on the beginning of a new period. A thorough evaluation necessitates keeping track of his performances over time and taking into account more than just the team start.