Youngster and rising star Mainoo at Man Utd wears the number #37.
If he continues the meteoric rise he will probably be given a squad number closer to the first 25. But for now he stands at 37.
The jersey on display is the red Man Utd home jersey for the season 23/24. The printing is the official font from Avery Denisson: Premier League style 23/24 white/black. PL logos at the bottom of the numbers.