On Friday, Chelsea was given a two transfer window ban by FIFA for breaking rules related to signing U18 players.
However, the ban (which Chelsea will appeal) only applies to the upcoming transfer windows. It does not impact done deals or loans.
Christian Pulisic Can Still Move This Summer?
In short, the ban has no impact on Christian Pulisic joining Chelsea this summer. He signed in January and was loaned back to Borussia Dortmund for the remainder of the season. He’ll be joining the Blues as originally planned.