Ibrox side Glasgow Rangers bowed out of Europe last week.
De Boer, Numan, Flo; Mark Warburton's team have a lot to live up to.
Glasgow Rangers defender Philippe Senderos was sent off in the Old Firm derby at Celtic Park last weekend.
Rangers trio Jason Holt, Barrie McKay and Martyn Waghorn have been praised by Arthur Numan.
The former Rangers defender thinks Robin van Persie's situation can be exploited.