Former Rangers star Ronald de Boer has told The Scottish Sun that he has met current Ibrox boss Mark Warburton, an found him 'very impressive'.
Warburton has taken Glasgow by storm since taking over this summer, with ten wins out of ten games, scoring 38 goals in the process.
Fans are now dreaming of a Scottish Championship title, with some supporters even believing that Rangers could go the whole season unbeaten after such a stunning start under Warburton.
Now, former Rangers hero Ronald de Boer has discussed the current manager in an interview with The Scottish Sun, as he prepares to watch his brother Frank take on Celtic in the Europa League with Ajax on Thursday.
De Boer, who hit 40 goals in 129 games for Rangers, says that he met with Warburton at a NextGen series - and admitted that Warburton was 'very impressive'.
"I met all the guys who were involved in the NextGen Series including Mark and I spoke with him," said De Boer. "We exchanged our ideas on the tournament. We spoke to each other in Liverpool."
"I found him very impressive. He was very humble and had a real passion for football. I have not seen Rangers myself yet this season but I am always looking to see how they are doing," he added.
Warburton is earning plaudits left, right and centre having made such an incredible start to life at Ibrox, but he will know that it will all be in vain unless Rangers win promotion to the Scottish Premiership this term.
The signs look good so far for Rangers, whose 100% record remains in tact ahead of this weekend's trip to face Dumbarton, with Warburton looking to keep up that winning run.