via Sky Sports |
By Andrew Dickson
Last Updated: 16/09/15 6:26am
Mark Warburton (left) has guided Rangers to 10 straight wins this season.
Ronald de Boer has backed Mark Warburton to keep succeeding at Rangers after being impressed by his ideas for the NextGen Series three years ago.
The Ajax side De Boer helped coach demolished Liverpool 6-0 in the last four of the…