Chelsea have rejected Barcelona's proposal of Malcom plus cash for Willian.
The Stamford Bridge club want straight cash for the 30-year old, who is interested in the move.
The Spanish side were willing to offer Brazilian winger Malcom plus cash for Willian who saw a proposed move to Barcelona fall through last year.
Malcom cost £38million from Bordeaux last summer but has failed to live up to his potential and is being courted by clubs across Europe.
Barcelona bought the 21-year-old after being rebuffed three times in their efforts to prise Willian from Chelsea.
Chelsea rejected offers going up to £65m in July but as Willian has turned 30 and has only 18 months left on contract, they could be tempted with a cash offer of £50m in this window.
Maurizio Sarri is eager to strengthen rather than lose too many key players but knows Chelsea want to lower the age of their squad.
Chelsea are loathe to let Callum Hudson-Odoi join Bayern Munich but 31-year-old Cesc Fabregas is primed to join Monaco and a big offer for Willian could prove tempting this time.
The skilful winger also has interest from China with Dalian Yifang prepared to offer him a lucrative deal to go there but Barcelona would be his dream move.