Manchester United refused to appeal against Grimsby: reasons for the club's decision.

According to The Sun: Manchester United lost the chance to return to the Carabao Cup, despite Grimsby, the team that defeated them, fielding an ineligible player.

Midfielder Clark Oduor came on as a substitute in the second half during Grimsby's surprise victory, but his registration occurred one minute after the deadline set for the match.

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Manchester United club decided not to appeal the £20,000 fine, despite a request from many fans.

It is believed United were concerned that using a technical error could lead to even bigger problems.

The team chose silence, accepting defeat in the penalty shootout, foregoing the opportunity to contest the match results.

The 26-year-old Oduor, who debuted for Grimsby after a loan from Bradford, failed to convert his penalty in the shootout, which Grimsby won 12-11.

Grimsby club admitted to the EFL that Oduor's registration occurred one minute after the deadline, making him INELIGIBLE to play in the match.

However, EFL officials believe that imposing a fine is an appropriate decision rather than expelling Grimsby from the tournament or replaying, after 'thorough consideration of all evidence and taking into account previous decisions.'

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EFL stated: “The management concluded that imposing a fine is consistent with precedent.'

Subsequently, Grimsby club acknowledged its mistake, stating that 'experienced computer issues' led to the unintentional breach.

After the incident, the club reviewed its procedures and improved measures to avoid repeating such mistakes in the future.

Getty Ultimately, the situation with Grimsby demonstrates the importance of adhering to regulations in sports competitions. While the team managed to achieve victory, the improper registration of a player created a series of challenges for the club. This case underscores once again that even minor technical errors can lead to serious consequences.