Chelsea's attempts to sign Chicago Fire goalkeeper Gabriel Slonina have reportedly collapsed due to sanctions placed on the club by the UK government.
The freezing of Roman Abramovich's assets following Russia's invasion of Ukraine means that the Blues are currently unable to buy or sell players.
The club are also not allowed to offer new contracts to current players or sell merchandise, but in recent days they have been allowed to start selling some tickets again.
Transfer chiefs at Stamford Bridge are already feeling the repercussions of the restrictions as talks have broken down over a deal for promising shot-stopper Slonina, according to Fabrizio Romano.