Carlo Ancelotti has hinted Chelsea could purchase a defender during the January window.
The Premier League champions have been hampered by the lack of quality options in central defence this season.
Injuries to John Terry and Alex have highlighted just how frail they are in this position.
Dutch youngster Jeffrey Bruma has been drafted in this term to fill the breach but they would favour a more experienced option.
Benfica defender David Luiz has been continually linked with the champions but his club have slapped a £25million price tag on him.
However, Roman Abramovich could yet release the funds to sanction such a purchase.
"We are thinking about central defence," said Ancelotti.
"If we find the right player for us, we have the possibility to buy."
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