Chelsea have asked the Court of Arbitration for Sport to suspend the transfer ban imposed by Fifa over the Gael Kakuta affair.
The Stamford Bridge side were found guilty by world football's governing body of inducing Kakuta to breach his contract with Lens.
Chelsea vowed to fight the punishment and launched an immediate appeal and now the CAS has confirmed that the Blues want the penalty, which would prevent them from signing players until the January 2011 transfer window, to be put on hold.
A statement on the official CAS website read: "Chelsea Football Club and Gael Kakuta have filed appeals at the Court of Arbitration for Sport against the decision issued by the Fifa Dispute Resolution Chamber on 27 August 2009.
"Both Chelsea FC and Kakuta have requested that the Fifa decision be stayed pending the outcome of the CAS arbitration. A decision concerning the request for a stay is likely to be issued by the CAS at the beginning of November."
Chelsea were banned from signing any new players until 2011 after being found guilty of inducing Kakuta to breach his contract with Lens two years ago.
Kakuta, who was also banned from playing for four months, is also appealing against Fifa's punishment.