Manchester United's first arrival this month isn't a January signing, but instead a young man they snapped up months ago.
Amad Diallo technically joined the club in the previous transfer window, staying at Atalanta on loan for the first half of the season. The £37million deal, which will cost United £19million and up to £18m in add-ons, went through after Diallo passed a medical and agreed personal terms on Thursday.
But, after officially completing his big-money move to Old Trafford, little is known about the 18-year-old winger... so Sportsmail is here to tell all.