According to the English media Liverpool would like de Jong and exchange Assaidi who has made only three league appearances this season, now looks set to leave.
Ajax coach Frank de Boer has already stated that his selection probably will remain intact during this tumultuous month of January. Only in the summer he expects to lose some of his star players like Siem de Jong, Toby Alderweireld and Christian Eriksen.
However Newcastle looked to offer around 11 million euros for De Jong, after it seems they have lost out to QPR on Marseille striker Loic Remy who is set to join this week.
Newcastle desperately need to add some firepower to their squad to save their season
Newcastle boss Alan Pardew has already spent money on a Ajax player Vurnon Anita in the summer and has been linked to other players in Amsterdam like Jody Lukoki.