Benfica have confirmed that they have received an offer for Brazilian defender David Luiz from Chelsea.
The 23-year-old has been the figure of significant attention during the whole of the January transfer window and has been consistently linked with the Blues since last summer, with manager Carlo Ancelotti recently admitting his interest.
The Portuguse media previously announced that the deal reached on Saturday in London has been delayed due to differences over payment instalments, with a fee of £21million rumoured to be the offer on the table.
But it appears that negotiations are still ongoing between both parties as they look to settle on a price for the Brazil international, who has a contract with Benfica until 2015.
Luiz has been in fine form for the Portuguese club following his move to the Stadium of Light in 2007, winning his first cap for his country in August.
"A negotiation process is currently ongoing and the market will be informed when it is completed," Benfica said in a statement.