Chelsea boss Andre Villas-Boas has left the door open to a new signing before the winter market closes.

Chelsea have been linked with a move for Shakhtar Donetsk's Brazilian frontman Willian, but Villas-Boas maintained he was not set to move for the 23-year-old.

The Portuguese coach said: "Willian is a very interesting player, but he is cup tied in the Champions League.

"I don't think we should go for players who cannot be involved in all the competitions.

"We are not stressed regarding what we can do in this transfer window.

"If a good opportunity arises, we could study it, but at the moment, we are very satisfied."