They would have watched midfielder Sergio Gomez – a player who has been loosely linked with Rangers in the past – score twice for Anderlecht.
The Belgian newspaper also claims that representatives from Ajax, Manchester United, Dortmund, Inter Milan, Southampton and Everton were also present at the Stade du Pays de Charleroi.
Rangers plundered the Belgian market in the summer, bringing in Zambian internationalist Fashion Sakala from Oostende. The forward has contributed to Rangers’ strong start in the cinch Premiership this season and is a firm favourite with the fans.
Van Bronckhorst, who took over from Steven Gerrard earlier this month, will want to make his mark on the squad and is expected to make signings in January.