Local Sport & MD love to spout nonsense with regards to transfer speculation but there is some unanimity that Barcelona have a verbal agreement with both player & Overmars that Barcelona will have a 'preferential right' to the player in 2019 - whatever that means.
Clear he fits both our playing styles quite well but I am fairly confident the player really has his eyes for one club. If you haven't watched much of him, Ajax are in CL this season so watch his matches for him & De Ligt - a fantastic talent