Sky sources understand Barcelona have renewed their efforts to sign Chelsea's Willian, proposing a deal which would see Malcom move to Stamford Bridge.
Barcelona tried to sign Willian last summer, making three bids, with the final one worth more than £55m rejected in July.
Barca signed Malcom instead for £38m from Bordeaux.
Willian is 30 and his Chelsea contract runs out in the summer of 2020.