I'm not against the signing of Willian, he is a fantastic footballer and i'm happy that he came. But after his signing i won't blame KDB wanting to leave, there is no place anymore for him and seeing that he is not homegrown, the profit that the club would make on his sale won't be bad either. Just put a buy back clause just in "case of"... Sell him for something like 15M and a back buy clause of 25M will do it