I certainly see him staying, contrary to the bs reports circulating around everything else seems to indicate him being very happy at Juventus and planning to remain here for many years to come, ofc in football you never know, but i'm sure that if we do manage to stay/get back to being even more competitive, which is ofc quite likely to happen, then i think we have nothing to worry about regarding his future.
He is a Raiola player afterall so rumors are always expected to be circulating around, regardless if there is or not any truth to them.