Chelsea are interested in Feyenoord attacking midfielder Jonathan De Guzman.
The Holland international has been watched by Chelsea scout Hans Gilhaus this season and has attracted a formal inquiry, says the Telegraph.
Chelsea were told on Friday that they will be able to trade in January by the Court of Arbitration in Sport which will also hear the club's appeal. Fifa imposed the ban, until 2011, after finding Chelsea guilty of inducing French winger Gael Kakuta, now 18, to break his contract at Lens.