David Ornstein no longer believes that Eric Dier needs to leave in January for Tottenham Hotspur to sign another centre-back in the window. Ornstein has suggested that another defender is the priority for Ange Postecoglou next month. Of course, Tottenham are set to be without Micky van de Ven for a while yet after he sustained an injury in the dramatic loss to Chelsea last month. It was Eric Dier who came on against the Blues. And he played the full 90 minutes against Wolves. However, it was perhaps telling that he was left on the bench as Emerson Royal and Ben Davies played at centre-back aga…