Grimsby Town has been fined £20,000 for fielding an ineligible player, Clarke Oduor, in their Carabao Cup match against Manchester United. The club reported the error themselves after Oduor, who signed on loan from Bradford City, made his debut in the second round tie on 27 August 2025. The EFL Board has recognised Grimsby's co-operation and intent, and the fine includes a suspended £10,000 until the end of the 2025/26 season. Grimsby Town won the match 12-11 on penalties, but the error has led to a thorough review of their processes. The club has implemented strengthened measures to prevent similar occurrences in the future. Manchester United will not receive a reprieve in the Carabao Cup. The incident occurred due to a registration error, with Oduor's registration submitted at 12:01 pm, just one minute after the deadline. Grimsby Town has acknowledged the decision and accepts the fine. The club's statement highlighted their commitment to maintaining professional and regulatory standards. The EFL Board's decision follows a comprehensive review of the evidence and prior decisions in respect of offences in the League Cup. Grimsby Town will be liable for the suspended sum if they field an ineligible player again between now and the end of the 2025/26 season.