It is claimed that Sevilla are willing to sell Jules Kounde now. But it looks like Chelsea are not very willing to sign him as they don't want to meet his £68m release clause now. I think that it is really too much for the 22-year-old defender. But Chelsea have no choice rather than this one if they are certain to buy him. I can't actually call this as Sevilla are willing because then they would have a more merciful asking price. 
Looks more like a fishing expedition rather than a honest attempt to catch the player. Most Spanish team, particularly the large ones, are now on a spin since they just got some fresh money and if there is one thing in the world that they know how to do is spend huge amounts of money, sometimes poorly. I think that Chelsea and Seville are simply not in the same wave nor have even remotely a way of getting an understanding, and that is from someone who know people on Seville and Chelsea.