World football governing body, FIFA, has confirmed that Chelsea have launched an appeal against their transfer ban.
FIFA’s disciplinary committee had imposed a two-window ban on Chelsea for breaches of regulations relating to the transfer of 29 players under the age of 18.
The Premier League club were also fined 600,000 Swiss francs (over £460,000) and the Football Association was fined 510,000 Swiss francs (over £390,000).
The Premier League club also twice breached regulations relating to third-party influence, according to FIFA.
The London club previously said they “categorically refute the findings of the FIFA Disciplinary Committee”, and would be appealing the ban.
FIFA says “there is no exact timetable” for Chelsea’s case, and the appeal panel chairman must decide on freezing the punishment.
In similar cases, FIFA agreed not to enforce the transfer ban while the appeal process was ongoing.
Barcelona and Real Madrid were previously allowed to sign players in anticipation of their bans taking effect.
Barcelona eventually were not allowed to register new players for two transfer windows, while Madrid served a one-period ban.