He's signed to the club until 2031.
Kobbie Mainoo has signed a new Manchester United contract keeping him at the club until 2031.
The 21 year old has made 98 appearances and has been revitalised under Michael Carrick after falling out of favour earlier in the season.
United say he's one of the most gifted young players in the world and expect him to play a major role in the years ahead.

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