By Sean Walsh Cody Gakpo has revealed that he wanted his Liverpool arrival picture to feature a Christmas tree in a nod to Virgil van Dijk’s unveiling five years ago. Gakpo will officially become the Reds’ newest recruit when the transfer window opens on Sunday, joining from PSV Eindhoven for an initial £37m fee. The forward has admitted that he spoke to Van Dijk about the Reds before signing on the dotted line, with the veteran defender giving a glowing review of the club. When Van Dijk’s move to Liverpool from Southampton was announced in December 2017, he was unveiled with a freshly-printed…